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- Abstract：In order to understand the spatial distribution and matching status of agricultural water and land resources in Shandong Province, the agricultural water and soil resources of 17 prefecture-level cities in Shandong Province from 2007 to 2016 were analyzed using the Gini coefficient based on the amount of available water resources per unit of cultivated area by statistical methods. The spatial and temporal distribution and matching degree of resources, and the use of agricultural water and soil resources equivalent coefficients were adopted to evaluate the shortage of water and land resources in Shandong Province in 2016. The results showed that: 1)By introducing the equivalent coefficient of agricultural water and soil resources, the shortage degree of water resources and cultivated land resources in the 17 prefecture-levels in Shandong Province in 2016 was investigated. It was found that there were 14 prefecture-level cities in Shandong Province in the state of water shortage. Moreover, the agricultural water and land resources in Shandong Province were in a relatively unbalanced state, and the supply of water resources did not meet the demand for cultivated land resources; 2)From 2007 to 2016, the spatial distribution of water and soil resources in Shandong Province showed a distribution pattern of “More in northwest, less in central and eastern”. The average water and soil resource matching coefficient of Shandong Province was 2 100 m3/hm2, which was less than half of the national average matching coefficient. The average water and soil resource matching coefficient in the 2007-2016 study period showed a downward trend, indicating that the matching degree of water and land resource in the 17 prefecture-level cities began to deteriorate. The overall matching degree of water and soil resources presented spatial distribution pattern of “The west is superior to the east”.Keywords：agricultural water and land resources;matching pattern;Gini coefficient;matching coefficient of water and land resources;equivalent factor3|7|16<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：To explore the potential ecological risk and pollution source of heavy metals, including Hg, As, Cr, Cu, Zn, and Ni in Mollisol water shed, a total of 136 samples were taken as study materials. The potential ecological risk index, correlation analysis, principal component analysis and PMF analysis were employed to reveal the heavy metal pollution situation and source. The main results were as follows: 1)The metal pollution of Cu, Zn, Hg, Ni and Cr have exceeded the soil background value of Heilongjiang Province, and the over standard rates were 16. 2%, 28. 7%, 93. 4%, 48. 5% and 19. 1%, respectively. They all showed a moderate variation and were impacted by human activities; 2)The potential ecology risk index indicated that Hg was at a medium risk level and other elements were at a low risk level; 3)Pollution source analysis showed that the heavy metal pollution was mainly from 4 kinds of sources, e. g. natural and atmospheric subsidence source, industrial and agricultural activities source, domestic pollution source and transportation source. The main source of Hg was coal-fired activity, Cu pollution was mainly due to excessive application of chemical fertilizer, and the accumulations of Zn, Ni and Cr were mainly related to transportation.Keywords：soil heavy menta;ecological risk;positive matrix factorization;source analysis;a Mollisol watershed2|11|17<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to optimize phosphorus(P)fertilizer application strategies of sweet maize for high efficiency and yield in acid red soil of South China, field experiments were conducted in Zhaoan and Langqi counties in Fujian Province. The effects of different P fertilization practices on sweet maize yield, P accumulation, P fertilizer use efficiency and carbon emission were investigated. Four treatments were control treatment(P2O5 0 kg/hm2), farmer fertilizer practice(P2O5 135 kg/hm2 and organic matter 6 000 kg/hm2 using broadcast application), optimal P fertilization practice based on P building-up and maintenance approach(P2O5 35 kg/hm2 using spot application), and organic substitution treatment(P2O5 17. 5 kg/hm2 and organic matter 434 kg/hm2 using spot application). The results showed that: 1)There were no significant differences between optimal P fertilization practice, organic substitution treatment and farmers' P fertilization practice on sweet maize yield, shoot biomass and P2O5 accumulation. 2)Optimal P fertilization practice and organic substitution treatment increased P fertilizer partial productivity and P fertilizer apparent recovery efficiency of sweet maize compared with farmers' P fertilization practice. 3)Compared with farmers' P fertilization practice, the ratio of economic output to input under optimal P fertilization practice and organic substitution treatment increased by 39. 5% and 36. 2%, and carbon emissions per kilogram of production reduced by 14. 9% and 13. 2%, respectively. Therefore, optimal P fertilization practice and organic substitution treatment can maintain sweet maize yield with increasing P fertilizer use efficiency and economic benefit as well as reducing carbon emission in red soil of high P concentration.Keywords：sweet maize;phosphorus fertilizer;effective utilization;carbon emission7|10|5<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to investigate the response law and adaptation mechanism of oat photosynthesis to spraying humic acid under drought stress, pot experiments were conducted. Humic acid(HA)and equal amount of clear water(CK)were sprayed under three water conditions including normal water supply(75% field capacity), moderate drought stress(60% field capacity)and severe drought stress(45% field capacity). The(CIRAS-3)photosynthesis measurement system was adopted to measure and fit the light response process of oat leaves. The results showed that: 1)Among the right angle hyperbolic model, non-right angle hyperbolic model, exponential model and right angle hyperbolic correction model, only the characteristic parameters obtained by fitting the right-angle hyperbola correction model were relatively accurate. 2)HA effectively alleviated photo inhibition caused by severe drought stress. 3)After spraying HA under severe drought stress, the maximum net photosynthetic rate(Pnmax), dark respiration rate(Rd), and apparent quantum efficiency(Φ)of oat leaves significantly were increased. The light saturation point(LSP)and light compensation point(LCP)were decreased. With the increasing of photosynthetic active radiation(PAR), the increasing rate of transpiration rate(Tr)and stomatal conductance(Gs)were increased, and the decreasing rate of intercellular CO2 concentration(Ci)was slowed down. 4)HA significantly increased oat yield under severe drought stress. Both grain yield and biological yield of oats were extremely significantly negatively correlated with light saturation point and light compensation point, and were significantly positively correlated with maximum net photosynthetic rate(Pnmax)and dark respiration rate(Rd). In summary, under severe drought stress, the photosynthetic mechanism of oat leaves were damaged, and HA reduced the damage of photosynthetic mechanisms by increasing the photosynthetic performance of oat leaves.Keywords：oat;drought stress;humic acid;light response model;net photosynthetic rate1|8|9<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：To identify the distribution and composition of anthocyanins in kale, the distribution of anthocyanins in stems and leaves in purple and white-leaved kale was observed under light microscope by hand sectioning, and the content of anthocyanins in leaves of purple-leaved kale was determined. The components of anthocyanins in leaves were analyzed by HPLC-MS. The results showed: That anthocyanins of purple leaf kale were mainly distributed in mesophyll cells adjacent to leaf epidermis cells, and mostly in mesophyll cells adjacent to lower epidermis. In stem, anthocyanins were concentrated in epidermis cells and parenchyma cells underneath epidermis. The closer the whole stem was to the upper part, the less the distribution of anthocyanins was. Anthocyanins were not observed in the inner, outer leaves and stems of kale, but chlorophyll layers were detected at the same location. After growing at 10 ℃, the anthocyanin content in leaves(inner and outer)was significantly higher than that at 20 ℃. Nine anthocyanin glycosides were identified from purple kale, they were cyanidin-3-glucoside-5-glucoside, cyanidin 3-sophoroside-5-glucoside, cyanidin 3-sophoroside(coumaryl)-5-glucoside, cyanidin 3-sophoroside(caffeoyl)-5-malonylglucoside, cyanidin 3-sophoroside(feruloyl)-5-glucoside, cyanidina-3-sophoroside(oxalate-p-hydroxybenzoyl)-5-glucoside cyanidin 3-sophoroside(coumaryl)-5-glucoside, delphinidin 3-glucoside, and delphinidin 3-glucoside(caffeoyl)-5-glucoside. In conclusion, the purple kale is highly rich in acylated and glycosylated anthocyanidins, it is a new kind of anthocyanin application product resources worth developing.Keywords：kale;anthocyanin;section;HPLC-MS;content;composition3|9|5<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to study the effect of endogenous hormone on flower bud differentiation of Prunus domestica×armeniaca. ‘Fengweimeigui' was selected as the experimental material. The paraffin cross section method was used to investigate flower bud morphological differentiation. High performance liquid chromatography-mass spectrometry(LC-MS/MS)was used to measure the endogenous hormone levels during flower bud differentiation. The results showed that: P. domestica×armeniaca ‘Fengweimeigui' entered the stage of floral primordial differentiation in the middle of July, the Sepal primordial differentiation stage in late August, the petal primordial differentiation stage in late September, and Stamen & Pistil primordial differentiation stage in October. During flower bud differentiation, indole-3-aceticacid(IAA)content reached a stable status after the stage of floral primordial differentiation. Abscisic acid(ABA)content followed a pattern of increase-decrease-increase, whereas gibberellic acid(GA3)content was opposite to abscisic acid, showing a pattern of decrease-increase-decrease. Methyl jasmonate(MeJA)was significantly decreased during flower bud differentiation. In conclusion, the low levels of IAA, GA3, MeJA and high levels of ABA were favorable for flower bud differentiation. In addition, high mABA/mGA3 and mABA/mMeJA ratios were favorable for flower bud differentiation.Keywords：Prunus domestica×armeniaca;‘Fengweimeigui';flower bud differentiation;endogenous hormones;dynamic changes1|9|10<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：To explore the current leading institutions, scientists as well as their research interests and predict the future hot topics of bacterial wilt studies, CiteSpace was used to analyze the 2 987 articles collected from Web of Science by searching “Ralstonia solanacearum” or “Pseudomonas solanacearum” as subject for literature published from 1985 to 2019. The results showed that USA, CHINA, FRANCE, and JAPAN were the top contributors of literatures in this filed, with close cooperation among them. Caitilyn Allen, Philippe Prior, Qirong Shen, and Stephane Genin were the productive authors with high outputs. Furthermore, the current researches focused on the pathogenic mechanism of R. solanacearum, rhizosphere microbial ecology and plant-pathogen interactions. It can be speculated that future studies will concentrate in resistance genes exploration and resistant cultivar breeding. Besides, the genetic and pathogenic diversity of R. solanacearum, multi-omics analysis of plant-pathogen interactions will also be the research hotspots.Keywords：bibliometrics;bacterial wilt;CiteSpace;knowledge map0|10|6<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：To accurately identify milk, goat milk, sheep milk, horse milk and camel milk, the multiplex PCR was used to establish dairy product DNA extraction method and quality detection system. The results indicated that: 1)The established DNA extraction method for dairy products was simple, fast and efficient, not affected by food additives. The method could be completed in 2 hours with the extraction concentration of no less than 100 ng/μL and purity between 1. 70 and 2. 10, which was suitable for the DNA extraction of common liquid milk. 2)In the established multiplex PCR system, all primers had strong species specificity and no cross interference. 3)The detection sensitivity was 1 ng/μL. 4)A total of 24 samples mixed milk samples were tested for three times, the accuracy reached 100%, and the results were stable. 5)Ten samples of liquid milk(5 milk, 1 goat milk, 2 horse milk and 1 camel milk)on the local market were tested. The results showed that the source test of milk, horse milk and camel milk were consistent with product identification. However, two samples marked as fresh sheep's milk and fresh goat's milk displayed strong positive signals of bovine origin, suggesting that there was bovine origin adulteration.Keywords：dairy products;DNA extraction;multiplex PCR;specialty milk6|10|1<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：To study the preventive effect of juice and volatile oil from bergamot and sweet orange on rabbit ear acne, oleic acid was applied in rabbit ears to form an acne model. New Zealand rabbits were divided into blank group, model group, positive control group(gastric compound pearl acne capsule), bergamot juice and volatile oil high and low dose group, sweet orange juice and volatile oil high and low dose group and respectively were gavaged the corresponding components. The rabbit ear histopathology was then observed and the changes in sebum secretion, oxidative stress indicators and inflammatory factors in rabbit ear tissue were detected. The results showed that: 1)Rabbit ears acne induced by oleic acid had rough skin, thickened hair follicles and swollen mouths, and a certain amount of red pimples and pustules appeared. Triglyceride and malondialdehyde contents in rabbit ear tissues increased, inflammation factor expression levels increased while the antioxidant capacity decreased significantly(P<0. 05); 2)Compared with the model group, each intervention group reduced the expression levels of triglyceride, malondialdehyde and inflammatory factors in rabbit ear tissues. The content of antioxidant are increased, so the conditions of rabbit ear acne was improved; 3)In the component intervention group, sweet orange essential oil showed the best effect on acne, followed by bergamot essential oil, and the fruit juice was less effective. Therefore, both bergamot and sweet orange volatile oil showed a good effect of improving rabbit ear acne caused by oleic acid, and the sweet orange volatile oil had the best effect.Keywords：bergamot;sweet orange;juice;volatile oil;rabbit ear acne model;oleic acid0|8|1<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to identify the antibiotic resistance of Escherichia coli and ESBLs genes from pets, a total of 120 stains were isolated from 181 rectal swabs from dogs and cats in Urumqi. The drug sensitivity of the isolates was investigated by Kirby-Bauer(K-B)method. Three different extended-spectrum β-lactamases(ESBLs)of CTX-M(CTX-M-1G, CTX-M-2G and CTX-M-9G), TEM and SHV genes were detected by PCR. The results showed that: The drug resistance rate of the 120 strains of E. coli to tetracycline, ampicillin, compound minocycline and piperacillin was 35. 8%-60. 8%, that to cefotaxime, streptomycin, gentamicin, chloramphenicol, ciprofloxacin, and polymyxin was 10. 0%-29. 2%, and that to imipenem, levofloxacin, amikacin, ceftazidime, aztreonam, ampicillin-sulbactam, amoxicillin, cefepime, and meropenem was 0. 8%-10. 0%. A total of 58 strains(48. 3%)of E. coli showed multidrug resistance(MDR). The strains from dogs were mainly resistant to 3 kinds of antibiotics(16. 9%, 12/71), while the strains from cats were mainly resistant to 4 kinds of antibiotics(18. 4%, 9/49). Among them, 35 ESBLs positive strains were detected. The detection rates of ESBLs gene CTX-M-1G, CTX-M-9G and TEM were 40. 0%(14/35), 28. 6%(10/35)and 34. 3%(12/35), respectively. CTX-M-2G and SHV were not detected. In conclusion, MDR E. coli strains were isolated from healthy and sick pets and the CTX-M and TEM genes were most popular ESBLs genotypes.Keywords：pet;Escherichia coli;resistance;ESBLs;detection0|21|2<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：The study was conducted to optimize the extraction conditions for Artemisia argyi aqueous extraction(AAE)and investigate the antioxidant activity of AAE. Based on the single-factor test, response surface methodology was used to optimize the extraction conditions of AAE. The extraction rate of AAE was considered as the response value, and the solid-liquid ratio, time and temperature for water as a solvent were used as independent variables. The antioxidant activity of AAE was evaluated by determining iron reduction capacity, scavenging ability of DPPH and hydroxyl free radical. The results showed that: The optimal extraction conditions with water as extraction solvent were as follows: solid-liquid ratio 1∶25(the ratio of Artemisia argyi mass to water volume), the extraction temperature 84 ℃ and time 10 h. The extraction rate of AAE was 18. 05%. There was a positive correlation between AAE concentration and iron reduction capacity, and the IC50 of DPPH and hydroxyl free radical was 0. 102 and 0. 311 mg/mL, respectively. In conclusion, the results suggested that this optimal condition could be used to get higher extraction rate of AAE with strong antioxidant potential in vitro.Keywords：Artemisia argyi;aqueous extract;process optimization;response surface methodology;antioxidant activity3|8|7<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to improve the performance of the drum separator of fertilizer, explore the movement law of fertilizer particles, this study established the model of fertilizer whole particle and damaged particle based on the discrete element method, and studied the movement law of fertilizer particles in the drum separator. The results showed that the fertilizer particles in the drum were stratified when they reached a stable movement state, which could be divided into free layer, interface layer and hysteresis layer. The particles in the free layer mainly flowed in avalanche mode, and the particles in the interface layer rotated around the center of the region, while the particles in the sluggish layer were lifted close to the wall; The distribution position of the damaged fertilizer was analyzed by dividing the statistical area along the axial direction of the drum. It was found that the damaged fertilizer has axial segregation during the movement process, and the two ends of the drum were gather to the axial geometric center. The damaged fertilizer in the interface layer gradually accumulated in the free layer and the sluggish layer; The damaged fertilizer could fall into the collection tank after it left the socket, with the minimum separation angle of 32. 5° and the maximum of 47. 1°. In order to verify the simulation results, an experimental test was conducted showing that the error between the experimental and the simulation data was less than 10% proving that it was feasible to use the discrete element method to study the fertilizer movement in the drum separator.Keywords：fertilizer separation;drum;discrete element method;fertilization3|10|1<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：Aiming at the problems that the film residues are difficult to recover and the recovery contains many impurities and the low utilization value of the recovered film caused by some straw residues attaching to the ground after the mechanized corn harvesting, an self unloading film recycling machine is designed in this study. The machine is mainly composed of a suspension device, a frame, a transmission device, a film surface cleaning device, a film lifting device, a picking and feeding device, a bundling device, a film unloading device and a ground wheel. It can simultaneously complete the film surface cleaning, film picking and automatic playing bundling and unloading operation. The design of the membrane surface cleaning device is based on the existing stubble stubble mechanism with the number of stubble throwing blades and the arrangement on the blade shaft redesigned and the straw conveying auger increased. Negative pressure is used to convey the chopped straw to the surface of the operation. According to the topography of the Hexi Irrigation Area, the shape and inclination angle of the film lifting shovel are designed, and the optimal soil inclination angle is set at α=23°; The number of twelve rollers in the baling chamber is determined according to the design of the straw round baler. The results of field tests show that when the operating speed of the tool is 1. 39 m/s, the residual film pick-up rate reaches 92. 46% and the impurity rate is 2. 15%, resulting in high recovery rate of film.Keywords：film surface cleaning;baling;film mulching;residual film picking up;film shovel5|10|2<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：Aiming at the problem that the harvesters and grain trucks operation scheduling mostly relies on manual experience and lacks reasonable planning in the current agricultural production, a mathematical model of cooperative response scheduling was established. The response mechanism of harvester and grain truck and the optimal solution with the least waiting time of the harvesters and the minimum transfer distance of the grain trucks were introduced. This study defined the work unit, divided the time slot according to the harvesting frequency by the harvesting times and designed the dynamic programming algorithm. Algorithm A and B were proposed based on different strategies. The results of the two algorithms were compared and the influence of quantity ratio and harvesting efficiency was explored by means of simulation case analysis. The results show that: 1)The total cost of non-productive activities of generating scheme of algorithm A was superior to that of B; 2)When the number of grain transport vehicles was insufficient and there was a significant difference from the number of task units, the transfer distance of grain transport vehicles and the waiting time of harvesters were significantly increase; 3)When the quantity of collection and transportation is 3∶2, the harvesting efficiency maintained at 0. 40 hm2/h to obtain the optimal response operation efficiency, minimum waiting time and transfer distance, and minimum non-production cost under this configuration. The model and algorithm solved the accurate path planning of multi-path for multi-grain vehicles. In actual production scheduling, the harvesting efficiency should be selected reasonably and the quantity gap between harvesters and grain carriers should be narrowed so as to solve the scheduling optimization problem better under the situation of insufficient grain carriers.Keywords：work unit;scheduling model;time division;gain trucks;operation efficiency;objective optimization2|9|2<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to study the impact of social services of agricultural machinery at different links on the technical efficiency of grain production, based on the survey data of early rice growers in 7 provinces in 2019, the non-radial SBM model of data envelopment analysis was used to measure the technical efficiency of early rice production. The Tobit model and quantile model were used to analyze the social technology of agricultural machinery for early rice production technology. The results showed that: Overall, the socialized service of agricultural machinery had a significant positive impact on the technical efficiency of early rice production. Cultivated land, sowing and plant protection social services of agricultural machinery all had a positive and significant impact on the technical efficiency of early rice production, while irrigation, drainage and harvesting social services of agricultural machinery displayed no significant effect on the technical efficiency of early rice production. The socialized service of agricultural machinery had a significant effect on the improvement of planting technical efficiency of early rice farmers, but the marginal effect varied according to the original level of technical efficiency of farmers. This difference was also reflected in each production link. Therefore, for vigorous development of socialized services of agricultural machinery, it is necessary to formulate corresponding policies and measures according to the characteristics of its different links.Keywords：agricultural machinery socialization service;early rice growers;production technology efficiency;SBM model;quantile regression2|9|6<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to understand the effect of agricultural machinery service, this study conducted frontier analysis to calculate the technical efficiency of wheat production in 15 provinces by using data from 2007 to 2017. The Tobit model was used to examine the the impact of machinery, and then explained its influence mechanism. The results showed that: The technical efficiency was increased from 2007 to 2017 and there were regional differences among provinces. The technological efficiency of the provinces with a low starting point was improved significantly faster than that of the leading provinces, and the imbalance between regions was gradually reduced. The utilization of machinery service significantly improved the technical efficiency, which was mainly optimized through labor substitution, the division of labor and introduction of technology. At the end of the study, standardization of the agricultural machinery service market, improving the construction of service system, optimization the compensation mechanism of agricultural machinery and improvement of the timeliness of the policy implementation were recommended.Keywords：agricultural machinery service;technical efficiency;wheat production;stochastic frontier model1|9|1<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to clarify the role of agricultural technology progress in the process of agricultural carbon emissions, based the panel data of 29 provinces in China from 1997 to 2016(The data do not include those of Xinjiang and Xizang Autonomous Region, Hongkong, Macao and Taiwan regions. The same below. ), this study analyzes the impact of agricultural technology progress on the intensity of agricultural carbon emissions by using the SYS-GMM method. The results show that the agricultural technology progress as a whole promotes the reduction of carbon emissions. However, the breakdown path found that agricultural technology progress is not always conducive to agricultural carbon reduction: Represented by agricultural mechanization level, the mechanical model of technological progress promotes the agricultural carbon intensity increases; Represented by agricultural germplasm innovation, the biological technology significantly reduces the carbon intensity of agriculture. Therefore, in the process of green agricultural development in the future, attention should be paid on the impact of technological progress of different routes on agricultural carbon emissions, targeted promotion of agricultural carbon emission reduction, continuous promotion of agricultural germplasm innovation and promotion of high-quality new varieties to optimize the structure of agricultural machinery and equipment, promote the conversion of old and new driving forces of agricultural machinery, and more effectively promote carbon emission reduction in agriculture.Keywords：agricultural technology progress;carbon emission intensity;biochemical technology progress;mechanical technology progress3|7|14<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：The purpose of this paper was to determine whether big farm contributes to fertilizer reduction, and to identify sources that lead to heterogeneity of research results in the existing empirical literature by meta-analysis. The results showed that: 1)There was a weak negative correlation between the farm size and the intensity of fertilizer use; 2)The empirical findings of this negative correlation were significantly affected by the degree of education of farmers, age, research country, and time of the research published. The four factors were relevant sources of heterogeneity of the existing empirical literature research results. In conclusion, agricultural scale management does contribute to reduce fertilizer, but the recessive mechanism of its regulatory variables still needs to be discussed in depth.Keywords：agricultural scale management;fertilizer use intensity;meta-analysis;meta-regression analysis1|8|5<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to promote the adoption of agricultural waste recycling technology, improve the utilization efficiency of resources, and reduce agricultural non-point source pollution, the micro-survey data of big peach farmers in Pinggu District of Beijing was taken as study samples. A structural equation model was adopted to empirically analyze the influence of potential benefit of technology on the adoption behavior of peach branch waste recycling technology. The results showed that: 1)The social benefit cognition, ecological benefit cognition and adoption behavior displayed a positive correlation. The effect of action mechanism ecological benefit cognition was greater than that of social benefit cognition. The economic benefit and adoption behavior had a negative correlation; 2)The cognition of social benefit displayed a positive influence on the cognition of economic benefit, and the cognition of economic benefit had a positive influence on the cognition of ecological benefit; 3)Promoting the adoption of peach branch waste recycling technology by farmers improved the loyalty of farmers to the technology. In conclusion, it is necessary to give full play to the leading role of neighborhood to improve farmers' awareness of technological benefits. It is also necessary to promote the adoption of agricultural waste recycling technologyand, strengthen the integration of production, education and therefore promote the development of green agriculture by formulating differentiated policies.Keywords：agricultural waste recycling;potential benefit perception;adoption behavior;SEM3|23|3<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：Aiming at the problem that the traditional land consolidation model had no obvious effect on reducing the fragmentation of cultivated land, based on the landscape ecology method, the study compared the landscape pattern index and utilization efficiency of cultivated land before and after the cooperative-dominated land consolidation. The influence of the cooperative-dominated land consolidation on the pattern and utilization of cultivated land was investigated. The results showed that: 1)After consolidation, the plot size expanded, the evenness of the plot size improved, the average size of plot expanded from 0. 016 hm2 to 0. 096 hm2, and the coefficient of variation reduced from 49. 75 to 43. 55. 2)After consolidation, the complexity of plots shape decreased, the plots shape tended to be regular, the self similarity of the plots increased. The mean of plot shape index decreased from 3. 47 to 2. 48, and the mean of fractal dimension decreased from 1. 23 to 1. 17. 3)After consolidation, the degree of farmland fragmentation decreased. The fragmentation of plot decreased from 53 614. 44 to 1 487. 62. 4)After consolidation, the arable infrastructure conditions were significantly improved, the ditch density increased by 72. 28 m/hm2, the rural road density increased by 139. 43 m/hm2, the farmland output increased by 28 t/hm2, and the net profit increased by 23 900 yuan/hm2. The cooperative-dominated land consolidation model focuses on land leveling and ownership adjustment, solves the problem of arable land fragmentation from two aspects of natural fragmentation and fragmentation of ownership, and coordinates the. In conclusion, the plots are more suitable to meet the requirements of agricultural modernization production, which can be used to carry out high-standard basic farmland construction and upgrading the quality of arable land can be used for reference, and has a certain value of popularization.Keywords：cooperative;land consolidation;arable land fragmentation;landscape pattern index;plots pattern;land use1|8|5<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：In order to understand the research status of village reclamation in China, the articles published in the past 30 years since 1990 were searched in the China Academic Journal Network Publishing Database(CAJD)by using “homestead reclamation”, “rural residential land reclamation”, “old village reclamation” and “village renovation” as key words. The general overview, content framework and research status in key areas of village reclamation in China were summarized. The results showed that the research contents of village reclamation in China could be divided into three aspects: The first was the process and technology of village reclamation, including reclamation planning, topographical reconstruction, soil reconstruction and so on; The second was the evaluation of village reclamation, which included the evaluation of reclamation potential, reclamation suitability, soil quality and reclamation effectiveness; The third was the public and social issues of village reclamation, which involve linking the increase in land used for urban construction with the decrease in land used for rural construction, farmers' rights and interests, living environment and targeted poverty reduction. In the future, it is necessary to carry out research on the basic theories and technical process of village reclamation. At the same time, it is necessary to accurately understand the productivity difference mechanisms and fertilization measures of land reclaimed from abandoned village in different regions. Besides, comprehensive evaluation of current land quality, landscape pattern, ecological benefit assessment, legal system improvement, regulatory measures, and funding sources need to be further studied. They must meet the new requirements of targeted poverty reduction, rural revitalization and land space planning for ecological civilization construction and living environment improvement under the new era.Keywords：village reclamation;village renovation;homestead reclamation;targeted poverty reduction;rural revitalization;land space planning2|9|2<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：Based on the parametric distribution fitting and hierarchical clustering method, this study conducted the first quantitative assessment and regionization of the production risk of mariculture in China. The results showed that: the risk of total yield was concentrated in the reduction of 5%-15%, and a large degree of yield reduction(>25%)was likely to occur in terms of specific cultivated varieties. The distributions of yield fluctuation showed different forms, such as wide flat, peak, left skew and thick tail. The production risks of different mariculture varieties were significantly different. The ranking of production risk was as follows: fish>crustaceans>algae>shellfish. Hainan province is at high risk of expected yield loss, while Fujian, Shandong and Guangxi provinces were at low-risk. Based on these findings, it is suggested to adjust the varieties structure, improve the cultivation technology and management, and develop mariculture insurance to deal with the production risk of mariculture.Keywords：mariculture;production risk;risk assessment;risk partition;parametric distribution fitting1|8|1<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
- Abstract：Under the background of new global information revolution, the innovative theories and practical problems of digital construction in agriculture and rural areas of China were explored based on the theoretical exploration and practical experience of Xinjiang Production and Construction Corps(XPCC). The results showed that: Relying on its unique advantage at organizational scale, the XPCC has gained great achievements at the aspects of infrastructure construction of digital agriculture, development of characteristic e-commerce platform of agricultural products and application of digital technology represented by Beidou navigation in efficient seed and breeding industry. However, the existing software and hardware infrastructure construction and level of agricultural informatization still could not meet the overall needs of developing modern information agriculture to consolidate the achievements of poverty alleviation and implement the strategy of rural revitalization. By systematically sorting out the existing problems and demands, the overall objectives and tasks of XPCC were clarified in developing digital agriculture and rural construction from four aspects, including resource sharing, industry digitization, global visualization and decision-making intelligence. A systematic framework for the construction of digital agriculture and rural platform of XPCC with data assets as the core, industrial development as the focus, good governance as the foundation and the goal of benefiting the people was proposed. Three innovative construction and operation modes of the platform were put forward, and the guarantee work for construction of the platform were strengthened in terms of organization and leadership, system construction, talent team and capital investment.Keywords：XPCC;digital agriculture and rural;digital construction;current status;development trend4|9|1<HTML><L-PDF> <Meta-XML>Updated：2024-02-27
