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- Abstract：To comprehensively understand the common key technologies and development trends in global corn stover utilization， this study utilized Innography to search and summarize the global corn stover patents published during 1854 and 2021， and focuses on the analysis of global corn stover patent filing trends， filing institutions and comprehensive strength， and patents distribution across countries， etc. Visualization tools were also used to analyze patent technology clustering， providing insights into research directions and key common technologies in these fields. Among the innovative corn stover utilization technologies， high patent intensity patents were selected as representatives to discuss the directional leadership of patent on comprehensive utilization technologies of corn stover in the areas such as emission reduction and carbon sequestration， green ecology， modern equipment， high-value materials， intelligent information and biochemistry. The analysis revealed that China’s corn stover patents have a low authorization rate， and uneven development in R&D fields， a lack of international patent layout， relatively few patents on innovative utilization methods， and a low proportion of enterprise R&D. From 2017 to 2021， innovative utilization technologies for corn straw included carbon storage technologies in solid-liquid-gas states， which can achieve innovative carbon reduction and sequestration technologies； utilize corn stover can specialize the planting return method and the innovate of fertilizer utilization， increase crop yield， improve soil quality， and prepare substrate and green products for agricultural purposes， thereby achieving innovative green ecological technology； optimizing corn straw processes and methods using modern information technology can enhance resource utilization efficiency； optimizing straw collection， pre-treatment， and utilization equipment using innovative modern equipment technology can enhance agricultural machinery efficiency； developing high-value material technology for corn stover from the perspective of raw material innovation and high-performance material demand can achieve innovative utilization； utilizing biochemical technology， including fermentation technology， green fodder， microbial bacterium， and enzymatic technology， can be applied for innovative utilization of corn stover. Therefore， it is recommended to increase the number of own core patents or high-impact patents， improve the conversion rate of scientific and technological achievements and the proportion of international layout of patents， universities and research institutes. The integration of the industry should also be strengthened to expand the scope of innovative technology utilization. The corn stover high-value material industry represents an important breakthrough direction. By developing high value-added products and achieving resource recycling for comprehensive stover utilization， new opportunities and development paths for the entire corn stover high-value utilization industrial chain can be expected.Keywords：corn stover;patent analysis;research situation;innovative utilization139|36|2<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08
Establishment of genetic transformation system for ‘Huasong 66’ AI Introduction
Abstract：In order to explore the optimal genetic transformation system for potatoes， the genetic transformation system of purple potato ‘Huasong 66’， using stem segments of plantlets in vitro as explants. Plant silencing vector plasmid pBWA （V） KS-miR8019 was used to investigate the effects of different pre-culture times， plant hormones and their ratios， selection concentrations， and antibiotics using Agrobacterium tumefaciens transformation method. The results indicate that： 1） The pre-culture time of stem segments was 2 d， and the callus induction ratewas the highest. 2） The optimum callus induction medium was MS+2.0 mg/L 6-BA+1.0 mg/L 2，4-D and the ratio of callus induction reached 96.7%. The optimum callus differentiation medium was MS +4.0 mg/L 6-BA+0.1 mg/L NAA+1.0 mg/L GA3. 3） The optimum screening pressure for plants regeneration and rooting was 75 mg/L Kan. 4） The optimum concentration of agent for Agrobacterium bacteriostatic inhibition was 300 mg/L timentin， and the timentin was needed in callus induction， differentiation and rooting. In conclusion， the genetic transformation system of ‘Huasong 66’ was preliminarily established through studying the factors at each stage of Agrobacterium-mediated genetic transformation， which would provide the certain basis for the development of potato molecular breeding.Keywords：purple potato;Huasong 66;Agrobacterium-mediated transformation;genetic transformation system47|26|2<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08Functional analysis of MeF3H，a key gene for flavonoid synthesis，in cassava postharvest deterioration AI Introduction
Abstract：In order to understand the function of MeF3H in postharvest physiological deterioration （PPD） of cassava tuberous roots， ‘South China No. 9’ variety （‘SC 9’） was used as the material. The expression of MeF3H in leaves， petioles， stems， fragility embryogenic callus （FEC）， flowers， axillary buds， fibrous roots， tuberous roots and PPD process were analyzed， and the subcellular localization of MeF3H were determined. Virus induced gene silencing （VIGS） technology was used to silencing MeF3H， and the effects on flavonoid content and PPD were analyzed. The results showed that MeF3H was highly expressed in axillary buds and fibrous roots， and MeF3H was localized in the cytoplasm， the expression of MeF3H and content of flavonoid in tuberous roots were increased with PPD process. The results of qRT-PCR analysis indicated that the silence efficiency of MeF3H was 39% to 67%. Compared with control， the flavonoid content in the leaves and tuberous roots of silenced plants were significantly decreased（P<0.05）， and there is a significant positive correlation between MeF3H expression and flavonoid content（P<0.05）. The degree of PPD was significantly deepened in silenced cassava plants， with a root degeneration rate was over 50% at 3 d after harvest， while the deterioration rate in control plant was 36.67%. In conclusion， there is a significantly positive correlation between MeF3H expression and flavonoid content， PPD tolerance of turberus roots （P<0.05）. Silencing MeF3H gene significantly accelerates PPD occurrence in cassava tuberous roots.Keywords：cassava;flavonoids;MeF3H;tuberous roots;postharvest physiological deterioration36|25|0<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08Estimation of soil moisture content in cotton rhizosphere based on UAV thermal imaging AI Introduction
Abstract：In order to explore the inversion law of soil moisture content in the cotton rhizosphere based on the thermal infrared UAV imageing， this study took cotton at the flowering and boll stage as research object， and used plot water stress control experiment and model simulation to obtain the leaf water content and the relative soil water content （RSWC） of each soil layer （0-10， 10-20， 20-30， 30-40， 40-50 cm） in the rhizosphere under different drought stress days （2nd， 10th and 32nd days after irrigation） at the flowering and boll stage of cotton， and thermal infrared image data of UAV on the 2nd， 10th and 32nd days of drought stress. The difference temperature index （DTI）， ratio temperature index （RTI）， normalized difference temperature index （NDTI） were constructed by combining cotton canopy temperature with leaf temperature and atmospheric temperature， and the indexes （canopy temperature， canopy-high temperature difference， canopy-average temperature difference， DTI2， DTI3， NDTI2， NDTI3） with a correlation of more than 0.6 with RSWC were selected to fit and verify the moisture content of different soil layers. The results showed that： 1） With the increase of drought stress days， the moisture content of cotton leaves showed a trend of first increasing and then decreasing， and the relative soil moisture content gradually decreased； 2） The precision of the temperature index constructed by canopy temperature with leaf temperature and atmospheric temperature to fit the rhizophere soil water content was better than that of the single use of canopy temperature. The overall trend NDTI3>DTI3>DTI2>NDTI2>canopy-average temperature difference>canopy-high temperature difference>canopy temperature； 3） The multiple linear regression model had a high estimation accuracy for the soil moisture content of cotton rhizophere， and the prediction accuracy of 10-20 cm rhizophere soil layer on the 2nd day of drought stress was the highest （R2 is 0.600， RMSE is 0.388）； The prediction accuracy of 20-30 cm rhizophere soil layer on the 10th day is the highest （R2 is 0.721， RMSE is 0.267）； and the prediction accuracy of 30-40 cm rhizophere soil layer on the 32nd day is the highest （R2 is 0.918， RMSE is 0.068）. In conclusion， the cotton canopy temperature obtained by UAV thermal image combined with leaf temperature and atmospheric temperature can be used to fit and estimate soil moisture content in crop root domain， which has practical significance for the development of water-saving irrigation and other soil water regulation and management technologies.Keywords：cotton;UAV;canopy temperature;canopy-air temperature difference;soil moisture content34|23|4<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08- Abstract：The aims of this study were to investigate the control mechanism of sweet corn rotation combined with marigold straw returning mode on cabbage clubroot disease， and provide theoretical basis and technical support for the planting mode. Fluorescence quantitative PCR technology， non-target metabolomics technology， high-throughput sequencing technology and field test verification were used in this study to explore the field control effect of sweet corn rotation combined with marigold straw returning treatment （CrMs） on Chinese cabbage clubroot， the number of resting spores and the differences in metabolites and microbial species in rhizosphere soil of Chinese cabbage. The results showed that： The field control effect of CrMs treatment on cabbage clubroot was 61.11%. The number of resting spores in the soil decreased from 1×105.92 spores per gram to 1×103.73 spores per gram. CrMs treatment changed the metabolite components in the rhizosphere soil of Chinese cabbage， increased the contents of metabolites such as chenodeoxycholic acid， alpha-Linolenic acid and 4-Isopropylbenzoic acid， and decreased the contents of metabolites such as oleamide and melibiose. Alpha-Linolenic acid and chenodeoxycholic acid were negatively correlated with the relative abundance of Plasmodiophora， and oleamide was positively correlated with the relative abundance of Plasmodiophora. In addition， CrMs treatment enriched the rhizosphere microbial diversity of Chinese cabbage， improved the composition of the soil microbial community， significantly increased the relative abundance of Bacillus， Bradyrhizobium， Lysobacter and Streptomyces， and decreased the relative abundance of Plasmodiophora， Fusarium，and Helicotylenchus. In summary， the new mode of sweet corn rotation+marigold straw returning to the field is an important cultivation measure to control the Chinese cabbage clubroot， which provides a key technical reference for the green prevention and control of the clubroot.Keywords：Chinese cabbage clubroot;rotation;metabolomics;microbial diversity237|43|0<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08
Optimization of the motion parameters of a rolling spoon type precision hole planter based on DEM-MBD coupling AI Introduction
Abstract：Aiming at the problems that the trajectory of fixed cavity formers of rolling spoon-type precision cavity seeders is in the form of a residual pendulum line， and the residual pendulum line is too large， which causes tearing and picking of the film， and in order to reduce the variability of the spacing of the plants， the simulation and analysis of the motion process of the cavity seeders are conducted based on discrete element method and multi-body dynamics coupling method. Taking the traction speed， traction angle and cavity seeder quality as the influencing factors， and the residual pendulum width， plant spacing and sowing depth as the response values， the influence law of each factor on the response values is determined through pre-test and single-factor test. Based on the results of the pre-simulation test， a multi-factor simulation test is carried out to obtain the optimal parameter combinations and to verify the reliability of the optimal results through the field test. The results show that： The optimal parameter combination of rolling spoon-type precision cavity formers is traction speed 523.43 mm/s， traction angle 21.9° and cavity seeder mass 18.2 kg. Under above condition， the plant spacing is 196.84 mm， and the width of the residual pendulum line is 13.98 mm. The optimal parameter combinations for the validation test are the plant spacing 193.86 mm with relative error 1.51%， the residual pendulum line 13.28 mm with relative error 4.39%.Keywords：cavity seeders;cavity formers;DEM-MBD coupling;simulation optimization29|20|1<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08Research progress on tea anthracnose pathogen infection AI Introduction
Abstract：To understand the genetic mechanism of response and resistance to anthracnose of tea plant， this study collected and summarized the progress on the pathogenesis and symptoms of tea plant anthracnose， the classification and identification of tea plant anthracnose pathogens， the infection process and mechanism of anthracnose， combined with the related reports on other plants. The results showed that： The pathogenic fungi of tea anthracnose were diverse and the infection process was very complicated， which resulted in difficult to identification of pathogenic fungi. Meanwhile， there were few studies on the molecular mechanism of infection to tea plants. However， existing studies were mainly related to fungal metabolic enzymes， effector proteins and mycotoxins in other plants， the molecular regulatory mechanism was still unclear. It is necessary to further study the infection mechanism and the interaction between host tea plant and anthracnose pathogens， and strengthen the field disease detection technology， so as to provide effective help for the infection regulation and its early diagnose， and comprehensive control of tea anthracnose.Keywords：tea plant;anthracnose;identification;infestation31|20|0<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08Development of a smartphone-based portable multifunctional food safety rapid detection system AI Introduction
Abstract：In order to address the low degree of integration and poor portability of current food safety rapid detection systems， this study focused on the rapid quantitative detection of ractopamine by using smartphones as the detection tool and employing the digital image colorimetric method. To accurately obtain the image information of the test strip and microplate， a portable image collection device with a fixed shooting environment was designed and the Fresnel lens， which can converge the light， was used. The image processing algorithm based on OpenCV and smartphone application were designed to achieve automatic identification of the reaction area of test strip and microplate and analysis of color features on mobile terminals. The results showed that： 1） The image collection device designed in this study can accurately image the test strip and microplate（CV<3%）； 2） The color feature values are logarithmically related to the concentration of ractopamine rapidly detected using the GICT and ELISA method（determination coefficients R2>0.97）. Specifically， the detection results obtained using the ELISA method are essentially consistent with those obtained by microplate reader （R2=0.987 3）. In conclusion， the system has the advantages of portability and speed， which does not require laboratory equipment， and is suitable for non-professionals to perform rapid quantitative detection of ractopamine on-site.Keywords：smart phone;digital colorimetric method;test strip;microplate;ractopamine;multi-function for food safety51|28|0<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08Molecular cloning and expression pattern determination of AmMETTL3 gene in Apis mellifera ligustica AI Introduction
Abstract：To clone the AmMETTL3 gene in Apis mellifera ligustica， analyze the physicochemical property and molecular characteristics of AmMETTL3 protein and determine the expression pattern of AmMETTL3 in different tissues and developmental stages of worker bees. AmMETTL3 CDS was amplified by PCR and then verified using Sanger sequencing. Related bioinformatic software were used to predict physicochemical property and molecular characteristics， identify structural domains and conserved motifs and construct phylogenetic tree of AmMETTL3. RT-qPCR was employed to detect the relative expression levels of AmMETTL3 in seven different tissues and five various developmental stages. The results indicated that the CDS of AmMETTL3 was successfully cloned， AmMETTL3 protein do not have typical transmembrane domain and signal peptide， and METTL3 is highly conserved in various insects including one structure domain MT-A70 and three same conserved motifs. AmMETTL3 and A. cerana METTL3 were clustered into one group in the phylogenetic tree. The expression level of AmMETTL3 was significantly up-regulated in hypopharyngeal gland （P<0.01）， significantly down-regulated in midgut （P<0.01） compared with that in antennae. The expression level of AmMETTL3 in 3-day-old larvae （P<0.01） was significantly lower than that in eggs. The expression level of AmMETTL3 in 12-day-old pupa （P<0.01） was significantly higher than that in eggs； the expression level of AmMETTL3 in workers at 2， 6， 12， 15 and 18 day-old （P<0.01） was significantly lower than that in workers at 1 day-old. This study provides references and a basis for further investigating the function of AmMETTL3 and itsrole in epigenetic regulatory mechanisms.Keywords：Apis mellifera ligustica;N6-methyladenosine;methyltransferase 3;MT-A70;molecular characteristics;expression pattern26|19|1<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08Study on the antibacterial mechanism of 1,10-Phenanthroline monohydrate against E. coli AI Introduction
Abstract：In order to analyze the antibacterial mechanism of 1，10-PHEN against E. coli， the minimum inhibitory concentration and the minimum biofilm inhibition concentration of 1，10-PHEN on E. coli was determined， and the effect of 1，10-PHEN on the micro-morphology of E. coli by scanning electron microscope was observed. Then， the differentially expressed genes in E. coli treated with 1，10-PHEN by RNA-seq technology and qPCR were analyzed. The results showed that： 1） The final concentration of 100 µmol/L 1，10-PHEN could completely inhibit the growth of E. coli， and 50 µmol/L 1，10-PHEN could inhibit the formation of its biofilm. 2） The results of electron microscope showed that 1，10-PHEN could shrink E. coli and destroy its cell membrane and cell wall. 3）1，10-PHEN could shrink E. coli and destroy its cell membrane and cell wall. After treating E. coli with 1，10-PHEN， 786 genes were significantly up-regulated and 850 genes were significantly down-regulated. The differentially expressed genes mainly participated in bacterial metabolism， two-component system， quorum sensing， antibiotic synthesis， and other pathways. The down-regulated gene ompW played an important role in biofilm formation， adhesion and stress tolerance of gram-negative bacteria， and PepN protein was the target of host to resist bacterial infection. Up-regulating the protein encoded by citT gene can affect the energy supply and drug excretion system of bacteria. 4） Nine genes related to biofilm formation and drug resistance were selected for qPCR verification， which was consistent with the results of transcriptome sequencing. In conclusion， 1，10-PHEN exhibits a significant inhibitory effect on the antibacterial activity of E. coli， and exerts regulatory control over the metabolism and expression levels of drug resistance genes in this bacterium. This study provides preliminary insights into the antibacterial mechanism of 1，10-PHEN against E. coli， and offers novel perspectives for identifying alternative antibiotics.Keywords：1，10-Phenanthroline monohydrate;E. coli;antimicrobial resistance;antibacterual activity;action mechanism54|15|1<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08- Abstract：To establish an early and rapid detection method for bovine infectious rhinotracheitis virus （IBRV） and determine whether infection occurs again after immunization， the IBRV gB protein was expressed in prokaryotic cell and verified by SDS-PAGE and western blot. And an indirect ELISA was preliminarly established. The results indicated that： 1） For IBRV standard positive serum， the minimum detection limit of this experimental method was 1∶4 096， indicating that the established gB-ELISA detection method had high sensitivity. 2） The method was negative to other 4 common bovine blight positive serological tests without cross-reaction， and the method had good specificity. 3） In the detection of 200 clinical samples of cattle， the coincidence rate of this method with IDEXX （IBRV gB X3） antibody detection kit was as high as 97.5%. In summary， the gB-ELISA detection method established in this study had high sensitivity and specificity. This method lays the foundation for developing a rapid diagnostic kit for diseases in the early stages of infection and can determine whether IBRV infection occurs again after vaccine immunization.Keywords：bovine infectious rhinotracheitis virus;gB protein;ELISA21|15|1<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08
Effects of castration and heat-stress on production performance, rumen fermentation and blood biochemical indexes of Junlian cattle AI Introduction
Abstract：The purpose of this study was to study the effects of castration and heat stress on production performance， rumen fermentation and blood biochemical indexes of yellow cattle. Eighteen 16-month-old Junlian yellow bulls of similar weight （（292.35±28.71） kg） with different degree of castration （Full-castration group： FCG， hemi-castration group： HCG and sham-operation group： SOG） were selected and divided into three groups， with 6 replicates in each group and 1 bull in each replicate. Then divided into heat stress （July and August） and non-heat stress （September） periods according to the changes of the thermal-humidity index （THI） during the experiment. Then the impact of castration and heat stress on indicators of yellow cattle was analyzed The results showed as follows： 1） Compared with the non-heat stress period， bulls in the heat stress period had significantly higher THI， respiratory rate and rectal temperature （P<0.05）.2） During the whole test period， the castration and heat stress significantly increased serum heat-shock protein 70， high-density lipoprotein （HDL-C）， low-density lipoprotein （LDL-C） and estradiol concentrations （P<0.05）； while serum testosterone， thyroxine （T4）， insulin， and free fatty acids concentrations were significantly decreased （P<0.05）； Besides serum glucose， T4 and LDL-C， castration and heat stress had a significant interaction effects on other serum index （P<0.05）. 3） The full-castration and heat stress significantly decreased dry matter intake and average daily gain （ADG）， and there was a significant interaction effect （P<0.05）. 4） During the heat stress period， the castration significantly decreased crude protein， acid detergent fiber and Ca apparent digestibility， and serum total antioxidant capacity （T-AOC） （P<0.05）， but significantly increased T-AOC in the non-heat stress period （P<0.05）. 5） The castration and heat stress both significantly increased rumen pH （P<0.05）， significantly decreased ammonia nitrogen （NH3-N）， acetic acid （AA）， and total volatile fatty acid （TVFA） concentrations （P<0.05）； and both had significant interaction effects on rumen pH， NH3-N， AA and TVFA concentrations （P<0.05）. In conclusion， castration and heat stress in bulls can affect the secretion of sex hormones concentrations and nutrient apparent digestibility， thereby reducing production performance， which provide a scientific basis for feeding management of beef cattle during heat stress periods.Keywords：Junlian cattle;heat stress;castration;production performance;apparent digestibility;serum biochemical indexes21|16|2<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08- Abstract：To realize the green and sustainable development of large-scale fattening sheep breeding and promote the application of bedding breeding technology in the field of sheep breeding， this paper systematically discussed the latest research progress of bedding breeding technology by literature review and summary. The results showed that： 1） The technology can effectively treat sheep manure and improve the enclosure environment， and mitigate adverse environmental impacts. 2） Compared with traditional breeding methods， bedding breeding could reduce the prevanlence and increase the rapid weight again， which had lots of obvious advantageous in promoting the growth health and welfare of sheep. 3） The selection and management of sheep bedding was one of the important factors affecting sheep health， production performance， and environmental sustainability. Therefore， this paper mainly analyzed the characteristics of sheep bedding breeding technology， bedding selection criteria， as well as the feeding effect and related parameters of sheep bedding breeding， hoping to solve the problem of waste disposal in sheep farms from the source， improve production performance， improve the enclosure environment， and provide theoretical support and technical guidance for the sustainable development of sheep farming.Keywords：bedding culture;organic bedding;enclosure environment;feeding performance21|24|1<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08
Estimation of water environmental bearing capacity of animal manure based on surface water target quality AI Introduction
Abstract：Aiming at the limited development of livestock and poultry breeding industry in the southern water network region， this study investigated the sources of water pollutants and evaluated the carrying capacity of the water environment in the Jiangshangang watershed in Zhejiang Province. The QUAL2K model was employed to establish a surface water quality response model for livestock and poultry manure， and the scenario analysis was conducted to explore the relationship between livestock and poultry farming and surface water quality response. The results indicated that： The nitrogen pollution load entering the river in the Jiangshangang watershed was 190.564 metric ton in 2020， and the major contributors，soil erosion， wastewater treatment plants， chemical fertilizer， and organic fertilizer application， and aquaculture contributed 70.0%， 14.8%， 11.0%， 2.8% and 1.4% of the total load， respectively. When the water quality target was set to reach Class I or better than Class II， their theoretical maximum carrying capacities of livestock and poultry farming in the watershed were 1.335 million and 16.221 million pig equivalents， respectively. The response relationship between surface water quality and livestock and poultry farming was weak， suggesting that livestock and poultry farming was not a limiting factor for water environment protection. Strengthening the construction and management of ecological channels to achieve the coordinated development of animal husbandry and water environment protection in the region is recommended in this study.Keywords：animal manure;water environmental bearing capacity;surface water quality;QUAL2K model;pollutant load19|18|2<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08Spatio-temporal distribution and prediction of agricultural carbon emissions in Hainan Province AI Introduction
Abstract：To explore the temporal and spatial distribution characteristics of carbon emission in Hainan Province， based on the agricultural data from 2016 to 2020， the annual total agricultural carbon emission and carbon emission intensity of Hainan Province were calculated by IPCC carbon emission calculation and prevention from four aspects， which were planting industry， aquaculture industry， fishery industry and agricultural energy.The results showed that： The total carbon emissions from the agricultural sector in Hainan Province had a small change over the years. In 2018， the total agricultural carbon emissions in Hainan Province reached the maximum of 4 956 900 tons of carbon equivalent， and the carbon emissions from the planting industry and agricultural energy accounted for the largest proportion， 61.62% and 31.29%， respectively. The characteristics of island lead to significant regional differences in total agricultural carbon emissions. The agricultural carbon emissions are much higher in the north and lower in the south， higher in the outside and lower in the inside. The agricultural carbon emission intensity of Hainan Province has been decreasing year by year. In 2020， the agricultural carbon emission intensity of the province has been reduced to 0.26 kg （in carbon equivalent） per 100 million yuan， which is faster than the national average. Under the current agricultural development scenario， Hainan Province has basically achieved the peak of carbon in the agricultural sector， and although the total carbon emission and carbon emission intensity are at a high level， they will continue to decline in the next few years.Keywords：Hainan Province;agricultural;carbon emissions;carbon intensity75|23|6<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08- Abstract：In order to promote the development of rural classification and optimize the rural development model，Changping District of Beijing City，the peripheral area of large city，is taken as theresearch object，and the spatial analysis method and three-dimensional magic methods are adopted to investigate the capacity of the resources and environment of the research area and the appropriate dual evaluation of land and space. Three types of space and national land space comprehensive function partitions are performed based on the dual evaluation results. to create an ecological green new city that coexist in harmony between human beings and natural environment. The results showed that：1） Ecological protection in Changping District accounted for 56.83% of the region in the region，which is distributed in the western and north surface vegetation covering a wide mountain area of forests. The more suitable area and the general appropriate area are mainly closely distributed in the middle of the Changping Plain； The suitable area of urban construction accounts for 11.58% of the region，and the area of Changping’s urban villages and industrial and mining land accounts for 44.43%. 2） The areas of Changping District ecological protection functional zone，urban construction functional area and agricultural production functional zone are respectively 1 076.47，181.61 and 87.96 km2，accounting for 80.12%，13.52 % and 6.55% in the region. The entire area is mainly composed of ecological protection functional zone，and the three types of space partitions are extremely unevenly distributed in the town. 3） Changping Center integrates the quality raising area，science，education and entertainment leading area，cultural tourism recreational conservation area and urban and rural hinterland carrying area，and the the proportions of each area are 5.16%，15.96%，69.08% and 9.29%，respectively. The central collection and quality district mainly includes Chengbei Street，Chengnan Street and Nanshao Town；The leading area of science，education and entertainment mainly includes Baishan Town，Beiqijia Town，Shahe Town and Xiaotangshan Town；The Cultural tourism and recreation areas mainly includes Yangfang Town，Liucun Town，Nankou Town，Shisanling Town，Yanshou Town，Cui Village Town，Xingshou Town；The urban and rural hinterland bearing area mainly includes Dongxiaokou Town，Huilongguan Town，Huoying Street，Machikou Town and Tiantongyuan North Street. These research will provide important scientific basis for Changping Land space planning.Keywords：double evaluation;three types of space;functional zoning of land space;rural areas on the outskirts of the metropolis;Changping21|15|3<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08
Diagnostic study on the intensity and stability of land use changes in mountainous area AI Introduction
Abstract：In order to analyze the characteristics of land use change in mountainous areas， rational use and protection of land resources. In this study， Dehua County of Fujian Province， an area with high urbanization in the mountainous region， is taken as an example. The remote sensing interpretation technology and multi-level land use change intensity analysis are adopted to identify the intensity and stability of land use changes in 1986， 2001， and 2020， and explore their changing patterns and driving mechanisms. The results show that： 1） The overall change intensity of land use in the early stage of urbanisation （1986—2001） is greater than that in the middle and late stage （2001—2017）， and the change intensity of land use from valleys to low mountains to Zhongshan gradually decreases. 2） The changes in construction land， waters， bare land and grass are relatively active during the study period， while the changes in forest land remain relatively stable. The transfer of cultivated land shows both activity and passivity， and the intensity of land type transfer is affected by topography. 3） The increase of woodland mainly comes from grassland. The conversion process of “grassland-forestland” is characterized by a stable and systematic tendency conversion model； the occupation of cultivated land， bare land and waters for construction land is systematic； and the land change model with a large transfer area is not necessarily characterized by stability or systematic change. Land conversion patterns such as “forest land-construction land” and “grassland-forest land” are affected by topography. 4） The urbanization process and development strategy are the key factors affecting the scale and speed of land use change. The study suggests that in the future， the layout of arable land in mountainous areas needs to conform to social development and population distribution. The balance of the entry and exit of arable land should adhere to a broken dialectical thinking， while the linkage of urban and rural construction land should establish the concept of “human-land linkage”.Keywords：mountainous area;land use change intensity;land use stability;cultivated land balance of entry and exit;Dehua County15|14|2<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08Corporate information responsibility of food industry enterprises in the Chinese context: Definition, behavior, and influencing factors AI Introduction
Abstract：In order to investigate the corporate information responsibility （CIR）， the CIR behavior and the main factors influencing the behaviors in the food industry. This study defines CIR based on literature research and the reality of China. Based on data from a survey of 462 food industry enterprises in Guangxi， the CIR behaviors and main influencing factors are investigated using multivariate Probit regression. A robustness check is also performed using the binary Logit model. The results reveal that：The legal and regulatory requirements and cost of performing CIR are related to the CIR behaviors， and there is a substitute or complementary relationship between the CIR behaviors. The enterprise size， age of decision makers， consumer demand for food safety information， external regulation， policy incentives， information technology maturity and infrastructure convenience are related to the CIR behaviors. Therefore， the study puts forward some policy suggestions to improve the system of laws and regulations， maintain the normal external supervision， effectively exert the policy incentive effect and provide sufficient and convenient information infrastructure.Keywords：information asymmetry;corporate information responsibility;food industry enterprises;Chinese context;expected net income13|15|0<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08- Abstract：In order to explore the impact of consumer’ perception on the purchase intention of green agricultural products. This study took CSA farm as an example， which was the representative of new green agricultural development models. Based on 820 questionnaires of consumers from 8 representative CSA farms in China， the formation mechanism of purchase intention of green agricultural products from the perspective of consumers’ perception was investigated by constructing the extended model of reasoned action theory. The results showed that： The consumer’ perceived value of green agricultural products and the risk of food safety had the positive significant impact on the purchase intention of green agricultural products； The subjective norm and attitude played the mediation between consumers’ perception and purchase intention of green agricultural products， and formed the chain mediation； The economic income positively regulated the impact of consumers’ perception of the risk of food safety on their attitude. Therefore， in order to enhance the consumers’ perceived value and promote the consumers’ purchase intention of green agricultural products， it not only needed to construct the consumers communities， guide and regulate the consumers’ behavior， and then enhance the consumers’ cognition and trust for the green agricultural products， but also needed to promote the coordination development of multiple entities and the sustainable development of green agricultural products， and then improve the supply capacity of green agricultural products and reduce the price of green agricultural products.Keywords：green agricultural product;perceived value;perceived risk;subjective norm;attitude economic income;purchase intention17|14|5<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08
Effect of population urbanization on the income structure of farmers: An empirical analysis based on Chinese provincial panels AI Introduction
Abstract：In order to understand the effect of population urbanization on the income structure of farmers， based on the provincial panel data from 2002 to 2020， this study uses the 2SLS regression model to explore the effect of China’s population urbanization on farmers’ income increase and income structure. The differences in the impact of different regions are compared and analyzed. The results show that： 1） Population urbanization can significantly increase the income of rural residents and narrow the income gap between urban and rural residents. 2） Population urbanization mainly increases the proportion of farmers’ wages and property income， but reduces the proportion of business and transfer income. 3） There are regional differences in the impact of population urbanization on the income structure of farmers. The eastern region is basically the same as the national situation， and the central region mainly shows a reduction in the proportion of business income； The characteristics of the effect in the west differ from both the east and central regions. This study provides policy implications for how to ensure the growth of farmers’ income from different sources in the context of rapid population urbanization in China.Keywords：population urbanization;new urbanization;farmers’ income increase;income structure;urban-rural mobility20|15|3<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08“Creative destruction”: The reconstruction of maintenance service system incurred by upgrading of agricultural equipment AI Introduction
Abstract：To explore the reasons for the statistical “reverse decline” of agricultural machinery maintenance service capacity with the increase of agricultural machinery inventory in China， this study uses the economic concept of “creative destruction” to build a theoretical explanation framework， and conducts an empirical test based on the panel data of major grain producing provinces from 2004 to 2020. The results show that： 1） Due to the leap of agricultural machinery manufacturing technology， China’s agricultural machinery equipment has been transforming from small-scale low-end machinery to large-scale high-end machinery since 2004， which initiated the transformation and reconstruction of maintenance service system from traditional to modern. 2） Upgrading of agricultural equipment has driven a large number of traditional maintenance points serving small and low-end agricultural machinery to withdraw through demand substitution effects and technology threshold effects， leading to the disintegration of the traditional maintenance service system. 3） The modern maintenance service system for large-scale high-end agricultural machinery has begun to take shape， with the agricultural machinery manufacturing enterprises， agricultural machinery distributors， social maintenance outlets， and agricultural machinery professional cooperatives becoming the core forces of the system. However， the modern maintenance service system faces challenges such as strong seasonal variations in demand for maintenance services， high requirements for timely maintenance by agricultural machinery users， and increasing operating costs for maintenance points and some of the new maintenance points may not be included in the statistical scope timely. 4） The percentage of large and medium-sized tractor power has a significant negative impact on the statistical density of agricultural machinery maintenance points， and the increase of percentage of large and medium-sized tractor power contributes 52.85% to the decrease in the density of agricultural machinery maintenance points. Finally， policy recommendations are proposed in this study to improve the modern maintenance service system and ensuring timely maintenance of large-scale high-end agricultural machinery during busy farming season from institutional， policy， and technical perspectives.Keywords：agricultural machinery maintenance services;upgrading of agricultural equipment;“creative destruction”17|16|1<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08- Abstract：To explore the food security crisis since 2020， this study takes the food security issues in Central Asia as study case based on the price indices and supply and demand in the global food market since the outbreak of the COVID-19. The results show that： Although there is no threat of hunger in Central Asia， the risk of socio-economic turmoil is still quite obvious and the food security situation remains critical. Especially， under the background of the West’s continued vitriol over the Russia-Ukraine situation， extreme weather， food export restrictions and the energy crisis， all of the above have further worsened the food insecurity in Central Asia. In addition to the international environment， the current food security problem in Central Asia is also influenced by a combination of natural and ecological conditions， agricultural economic policies， demographic problems and other factors. In order to tackle the root causes of food security， the Central Asian countries should develop a sustainable food security strategy， enhance the level of food supply security， and at the same time， achieve in-depth cooperation with the SCO and the Eurasian Economic Union to enhance food reserves and build a more resilient food security governance system in Central Asia.Keywords：Central Asia;food security;agriculture;COVID-19;sustainable development12|16|3<HTML><L-PDF> <WORD> <Meta-XML>Updated：2026-05-08
