Current issue

• 2022 Vol.12 No.6 Published:20 June 2022

  Nitrogen Application: Effect on Yield and Quality of Machine Transplanted Large Panicle Single Cropping Rice WANG Xiaodan, WANG Yaliang, ZHANG Yuping, XIANG Jing, ZHANG Yikai, CHEN Huizhe 2022, 12 (6):  1-4.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0203 Abstract + ( 290 )   HTML ( 11 )   PDF ( 1193KB )   ( 206 ) In order to propose the best fertilization mode suitable for large panicle hybrid rice ‘Yongyou 1540’, under the condition of machine transplanting and total nitrogen application rate of 195 kg/hm2, four nitrogen treatments were conducted in 2019: traditional nitrogen application with quick-release nitrogen (T1), single-dose deep fertilization at machine transplanting with 100% controlled-release nitrogen (T2), deep fertilization of 70% controlled-release nitrogen at machine transplanting and topdressing of 30% quick-release nitrogen at tillering (T3), and deep fertilization of 70% controlled-release nitrogen at machine transplanting and topdressing of 30% quick-release nitrogen at panicle initiation (T4). The effects of different nitrogen fertilizer management modes on the yield and main quality traits of hybrid rice ‘Yongyou 1540’ were studied. In addition, a nitrogen-free treatment (same phosphorus and potassium fertilizer) was taken the control (CK). The results showed that the yield of T4was the highest. Compared with the traditional nitrogen application with quick-release nitrogen (T1), T4 increased the percentage of head rice rate, alkali spreading value and rice gel consistency and reduced amylose content. The results indicate that the reasonable fertilization mode of ‘Yongyou 1540’ in high-yield cultivation is deep fertilization of 70% controlled-release nitrogen at machine transplanting and topdressing of 30% quick-release nitrogen at panicle initiation (T4), which is beneficial to the improvement of rice quality.

  Effects of Salt Stress on Fluorescence Characteristics of Wheat Seedlings and Comprehensive Evaluation SUN Qin, XU Xuexin, DENG Xiao, ZHU Zixin, ZHANG Yulu, GAO Guolong, GAI Hongmei, ZHAO Changxing 2022, 12 (6):  5-13.  DOI: 10.11923/j.issn.2095-4050.cjas2022-0001 Abstract + ( 359 )   HTML ( 8 )   PDF ( 1453KB )   ( 285 ) To explore the salt tolerance of four wheat materials (‘Jimai 32’, ‘Tainong 18’, ‘Dekang 961’, ‘Shiluan 02-1’) at the seedling stage and screen out excellent germplasm resources with high stress resistance, water culture experiment was used in this research, NaCl stress concentrations were set as 0, 100, and 200 mmol/L, and the growth characteristics, photosynthetic characteristics, chlorophyll fluorescence parameters, malondialdehyde (MDA) content, and proline content were measured. The four wheat materials were evaluated by principal component analysis and membership function analysis for salt tolerance. The results showed that with the increase of salt concentration, leaf fresh weight, root fresh weight, total root length, total root surface area, total root volume, net photosynthetic rate (Pn), transpiration rate (Tr), stomatal conductance (Gs), photosystem Ⅱ maximum photosynthetic efficiency (Fv/Fm), photosystem Ⅱ actual photosynthesis efficiency (ΦPSⅡ) and photochemical quenching (qP) of each variety decreased in varying degrees compared with those of the control, while root average diameter, intercellular CO2 concentration (Ci), malondialdehyde (MDA) concentration, non-photochemical quenching (NPQ) and proline content increased in varying degrees. The salt tolerance of the 4 varieties from strong to weak was ‘Jimai 32’> ‘Dekang 961’>‘Tainong 18’>‘Shiluan 02-1’. According to the multi-trait index of salt tolerance, ‘Jimai 32’ and ‘Dekang 961’ were screened to have high salt tolerance.

  5% Prohexadione Calcium EA: Effects on Lodging Resistance, Yield and Its Related Factors of Wheat SUN Bin, ZHANG Jiajia, SONG Yujiao, HAI Fei, WANG Lei 2022, 12 (6):  14-17.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0149 Abstract + ( 1017 )   HTML ( 7 )   PDF ( 1136KB )   ( 234 ) In order to explore the effect of prohexadione calcium (Pro-Ca) on the growth and yield factors and safety of wheat, taking wheat variety ‘Yumai 49’ as material, different doses of 5% Pro-Ca EA were applied to carry out field experiments after wheat turning green. The results showed that the application of 5% Pro-Ca EA (150-600 g/hm2) could dwarf plant height, reduce internode length, increase stem diameter and stem wall thickness. Pro-Ca could increase the number of ears, grains per ear, 1000-grain weight and yield of wheat. The application during the period of returning to green of 5% Pro-Ca EA 300 g/hm2 and 5% Pro-Ca EA 300 g/hm2 + 0.01% brassinolide SL150 mL/hm2 could achieve higher yield, reaching 7410.0 kg/hm2 and 7560.0 kg/hm2 respectively, increase by 10.7% and 13.0% compared with that of CK. 5% Pro-Ca EA is safe and harmless to wheat, so it is recommended to be popularized in wheat production.

  Row Spacing Configuration with Water-soluble Amino Acid Fertilizer and Betaine Affect the Physiological Effect and Harvest Index of Mechanical Harvesting Summer Maize Cultivars CHEN Jun, ZHANG Haijun, HAN Mingming, JIANG Fangshan 2022, 12 (6):  18-23.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0004 Abstract + ( 243 )   HTML ( 6 )   PDF ( 1206KB )   ( 190 ) In order to solve the problem of yield reduction caused by slow dehydration in short mature period and low light and temperature utilization efficiency in canopy due to high planting density (≥7.5×104 plants/hm2), the comprehensive effects of two growth regulators and row spacing patterns were studied by using mechanical harvesting summer maize ‘Dika 517’ as the material. The leaf area index (LAI), dry matter accumulation per plant, grain filling rate and dehydration rate were analyzed, aiming to provide a theoretical basis for selecting growth regulators for the production of mechanical harvesting summer maize in this area and optimizing of planting mode. The results showed that, under the water-soluble amino acid fertilizer treatment with the density of 7.5×104 plants/hm2, both the equal-row spacing and wide-narrow row spacing could achieve high harvest index and yield with high efficient grain filling rate 15 d after pollination by small leaf area index and low dry matter accumulation per plant. Compared with the insignificant dehydration rate of equal-row spacing, the wide-narrow row spacing was beneficial to an earlier grain dehydration peak to 35 d after pollination and the grain filling period to 45 d after flowering, but the water content of grain was still ≥32% at the harvest stage. However, the betaine treatment was affected by the wide-narrow row spacing and had too much biological productivity. Although the yield was significantly higher than that of the control, it was still significantly lower than that of the water-soluble amino acid fertilizer treatment. It is suggested that the cultivation mode of 70 cm + 50cm wide-narrow row spacing should be promoted for ‘Dika 517’ in central Shandong of Huang-Huai-Hai area. The water-soluble fertilizer rich in zinc amino acid should be sprayed at the 6-leaf expansion stage to improve the harvest index and yield. To achieve the mechanical grain harvesting, the dehydration index of grain moisture ≤26% should be achieved by delaying the harvest time.

  The Disastrous Fungal Diseases at Middle and Late Stages of Sugarcane Growth in Low Latitude Plateau: Investigation and Analysis of Occurrence and Damage LI Wenfeng, LI Jie, PU Jiarong, WANG Xiaoyan, SHAN Hongli, ZHANG Rongyue, PU Jinan, LI Yinhu, HUANG Yingkun 2022, 12 (6):  24-32.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0123 Abstract + ( 284 )   HTML ( 7 )   PDF ( 1311KB )   ( 248 ) In order to clarify the types and damage characteristics of disastrous fungal diseases at the middle and late stages of sugarcane growth, the occurrence and distribution of disastrous fungal diseases and variety resistance at the middle and late stages of sugarcane growth were investigated and identified in Yunnan. The yield, sucrose content and loss rate of sugarcane were weighted and measured at the mature stage. The results showed that there were three disastrous fungal diseases at the middle and late stages of sugarcane growth in Yunnan, including pokkah boeng disease, brown stripe disease and rust disease. The pathogens of pokkah boeng disease were Fusarium verticillioides and Fusarium proliferatum. The pathogen of brown stripe disease was Bipolaris setariae. The pathogens of rust disease were Puccinia kuehnii and Puccinia melanocephala. New varieties, such as ‘Guitang 11-1076’, ‘Mintang 12-1404’, ‘Funong 09-2201’, ‘Funong 09-71111’, ‘Guitang 06-1492’, ‘Guitang 08-1180’, ‘Yunzhe 11-1074’, ‘Guitang 06-2081’, ‘Guitang 08-1589’, ‘Yuegan 48’, ‘Liucheng 09-15’, ‘Yunzhe 05-51’, ‘Yunzhe 11-1204’, and ‘Funong 07-3206’ were highly resistant to these diseases. The measured yield loss rate of pokkah boeng disease, brown stripe disease and rust disease was 38.43%, 25.6% and 24.9%, respectively, and the average sugar content decreased by 3.54%, 2.82% and 3.11%, respectively. This study clarified the types and damage characteristics of disastrous fungal diseases at the middle and late stages of sugarcane growth in low latitude plateau, which could provide a scientific basis for disease control.

  Pymetrozine Compound Insecticides: Control Effect on Rice Planthopper and Safety for Spiders ZHANG Xinfeng, ZHANG Guo, YU Julong, FANG Jichao, LUO Guanghua, ZHU Feng, SHU Zhaolin 2022, 12 (6):  33-38.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0164 Abstract + ( 299 )   HTML ( 8 )   PDF ( 1258KB )   ( 287 ) In order to screen out compound insecticides that can effectively control the population of rice planthopper and delay the pymetrozine-resistance occurrence, four pymetrozine compound insecticides were selected in this experiment. They were 57% thiamethoxam·pymetrozine WDG, 30% pymetrozine·clothianidin SC, 35% thiamethoxam·pymetrozine WDG, and 70% pymetrozine·dinotefuran WDG. 25% pymetrozine SC was used as control agent, and water treatment was the blank. The insecticides were applied at the peak of the young nymphs of rice planthopper. The population number of rice planthopper and spider were investigated 3, 7, 14 and 21 days after application. The results showed that the 4 pymetrozine compound insecticides had good control effect on rice planthopper. The control effect of the 4 insecticides on rice planthopper was over 89% on the 3rd day after treatment, and they were still more than 98% on the 14th day after treatment. On the 21st day after treatment, the control effect of 35% thiamethoxam·pymetrozine WDG was 86.26%, and the control effect of the other three insecticides was still above 90%. The four pymetrozine compounds had no significant influence on spider population and rice growth. Therefore, the four pymetrozine compounds can effectively control the population of rice planthopper and are safe to the natural enemy (spiders), which can be widely applied in rice production.

  Barrier Analysis of Greenhouse Soil and Effect of Balanced Fertilizer Application LI Xiaoyan 2022, 12 (6):  39-43.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0016 Abstract + ( 220 )   HTML ( 5 )   PDF ( 1197KB )   ( 156 ) The greenhouse soil in Sucheng District was sampled, determined and analyzed, and the main obstacle factors of soil nutrient pollution were identified. The formula of balanced fertilizer was designed according to soil nutrient deficiency, and the effect of balanced fertilizer application on crop yield and quality improvement and elimination of soil pollution was studied. The results of laboratory analysis and field test showed that: (1) the organic matter content and available phosphorus level of representative greenhouse soils in this area were generally low; secondary salinization existed in some soils, and the content level of available nitrogen and available potassium in soils were generally high, but the variation was large, and a few parts still had the problem of insufficient supply of nitrogen and potassium; (2) the content of water-soluble salt in soil varied greatly, high concentration led to salinization of soil, while low concentration led to the failure of soil nutrient supply intensi ty to meet the basic needs of crop growth; the water-soluble K+/Mg2+in some soils was relatively high, the K+/Mg2+in some soils was relatively low, and Mg2+/Ca2+ in most soils was seriously low; (3) balanced fertilizer prepared according to soil nutrient and salt condition could promote high yield and quality of crops and reduce soil pollution load, and the treatment effect of 450 kg/hm2 was more prominent.

  Effect of Methyl Jasmonate on Coloration and Quality of ‘Crimson Seedless’ Grape BAI Shijian, HU Jinge, WANG Yong, CAI Junshe, CHEN Guang, ZHAO Ronghua 2022, 12 (6):  44-49.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0112 Abstract + ( 337 )   HTML ( 8 )   PDF ( 1269KB )   ( 278 ) The paper aims to explain the effect of different concentrations of methyl jasmonate (MeJA) on coloration and quality of ‘Crimson Seedless’ grape, so as to provide reference for improving coloration and quality of grape berry in Turpan. Three different concentrations (20, 60, 100 mg/L) of methyl jasmonate (MeJA) were respectively applied twice to ‘Crimson Seedless’ grape before and at the beginning of coloring period. The color and quality indexes of fruits were determined during the harvesting period to analyze the differences of the indicators under different treatments; the fruit color index and quality index were evaluated by membership function method to determine the most appropriate application concentration. The results showed that anthocyanin content in the peel was significant increased and chlorophyll was decreased, and the coloration of grape berry was improved. The grape berry treated with methyl jasmonate (MeJA) had a higher a value (green-red chromaticity coordinates) and C value (chroma) and a lower L value (lightness) and b value (blue-yellow chromaticity coordinates), and the color of the fruit surface was improved. The application of MeJA significantly enhanced the berry length, berry diameter, berry mass, cluster mass, peduncle size, soluble solid content and titratable acid, and decreased fruit shape index. Excessive high concentration of MeJA could reduce peduncle pull and the storage and transportation performance, and cause high titratable acid content, while the anthocyanins content and coloring index were not significantly increased. However berries tended to wilting with low concentration treatment. 15 indicators related to the fruit quality were selected in the comprehensive assessment with membership function method, the fruit quality rank of the 4 treatments was 60 mg/L> 20 mg/L> 100 mg/L> CK. In summary, spraying 60 mg/L MeJA twice on ‘Crimson Seedless’ grape before and at the beginning of coloring period in Turpan can significantly improve fruit coloring and fruit quality.

  Prediction of Crab Yield by BP Neural Network Based on Meteorological Factors of Crab Producing Areas in Jiangsu JIN Wu, HE Qi, DU Xingwei, ZHU Xinyan, WEN Haibo, MA Xueyan, HE Yijin, BING Xuwen 2022, 12 (6):  50-54.  DOI: 10.11923/j.issn.2095-4050.cjas20200300085 Abstract + ( 240 )   HTML ( 5 )   PDF ( 1361KB )   ( 199 ) To improve the prediction ability of the crab production in Jiangsu and make a scientific and reasonable plan for crab culture to reduce disordered competition and unbalanced supply and demand, meteorological data in seven observation stations near the crab producing areas from 2013 to 2017 and crab yield data of the region were collected. The interpolation method was used to make up for some missing values. The principal component analysis (PCA) was used to select the five principal components that best represented the characteristics of data. Back propagation (BP) neural network was used to explore its feasibility for predicting the changing trend of meteorological data in these areas. After dimensionality reduction processing by PCA, the results show that most of the characteristics of the data can be learned by the BP neural network. The correlation coefficient between the predicted value and the true value of yield is 0.82267, which means the BP neural network has a certain simulated relationship capacity between weather factor data and the yield.

  Population Genetics of Chinese Mitten Crab Between the Breeding and Wild Populations ZHOU Huaxing, DUAN Guoqing, JIANG He, LING Jun, HU Yuting 2022, 12 (6):  55-59.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0158 Abstract + ( 254 )   HTML ( 3 )   PDF ( 1318KB )   ( 185 ) Eriocheir sinensis, especially the Yangtze mitten crab, is an important aquaculture species in China. In recent years, serious germplasm mixture of this species has been detected and little is known about the reasons. In this study, population genetics among wild and breeding populations of the Chinese mitten crab was comparatively analyzed based on mitochondrial marker in order to explore the germplasm mixed level. The results show that the genetic diversity of wild crab in the Yangtze River is low, and over fishing could cause the decline of wild resources. No genetic difference among the wild and breeding populations is detected, which means serious germplasm mixture. This study clarifies the resource status of Chinese mitten crab in the Yangtze River, and can provide a scientific basis for the protection of this species.

  Effects of Climatic Conditions at Different Sowing Dates on Main Agronomic Characters and Quality of Soybean in Northeast Inner Mongolia WANG Yanping, ZHANG Kun, ZHANG Jiaxing, YAO Ye, JIANG Fengyou 2022, 12 (6):  60-65.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0076 Abstract + ( 293 )   HTML ( 4 )   PDF ( 1178KB )   ( 287 ) Through the comparative analysis of agronomic characters and quality of three soybean varieties on five sowing dates in northeast Inner Mongolia, the best sowing dates were obtained for the three soybean varieties with high yield and high quality. The best sowing date of high fat variety ‘Mengdou-12’ was May 15, and its yield and quality were the best. The best sowing date of high protein variety ‘Mengdou-13’ was April 27, and the sum of theoretical yield, the content of crude protein, crude fat and total fat in protein were higher than those at the normal sowing date. The best sowing date of high yield variety ‘Mengdou -15’ was April 27 and May 5, and the yield of one-week early sowing was basically the same as that of two-week early sowing, so late sowing was not proper, and the grain quality of early sowing was better than that of late sowing. The comprehensive performance of the three varieties showed that they could be sown early in rainy years. Moreover, the differences of temperature, precipitation and daily temperature range were compared between the best sowing dates and the normal sowing dates, and the effects of climatic conditions at different sowing dates on yield and quality of different varieties were analyzed. Low air temperature and increasing daily temperature range from sowing stage to fruiting stage and less precipitation in the whole growth period are not conducive to the yield formation of ‘Mengdou-12’, but they are beneficial to the yield formation of ‘Mengdou-13’ and ‘Mengdou-15’. Subnormal air temperature from sowing stage to fruiting stage and large daily temperature range in the whole growth period are beneficial to increasing the content of crude fat, crude protein and protein and oil.

  Variation Characteristics of Climate Suitability Factors for Flue-cured Tobacco Cultivation in Sanmenxia City CAI Tao 2022, 12 (6):  66-73.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0208 Abstract + ( 222 )   HTML ( 5 )   PDF ( 1401KB )   ( 244 ) The variation characteristics of main climate suitability factors affecting the flue-cured tobacco planting in Sanmenxia were analyzed in order to provide meteorological services for tobacco production by using climate resources more effectively. Methods of climate inclination rate, trend coefficient, coefficient of variation and R/S analysis were used to analyze the variation characteristics and future trend of climatic suitability factors for flue-cured tobacco cultivation in Sanmenxia. The results showed that the annual average sunshine duration of flue-cured tobacco field period in Sanmenxia was 824.4 h and decreased significantly at a rate of 36.4 h/10 a from 1960 to 2018; the average annual precipitation in the flourishing period was 120.2 mm and decreased at a rate of 2.7 mm/10 a, and the fluctuation of precipitation increased significantly from year to year; the annual average temperature of mature period was 23.1℃ and increased slowly at a rate of 0.03℃/10 a. The Hurst index of the three climate impact factors was 0.839, 0.611 and 0.641, respectively. The multi-year average of each climate suitability factor was within the optimal range of quantitative index, suitable for the cultivation of high-quality tobacco, and its future trend of change is consistent with the past, with the variation trend of sunshine hours being the strongest.

  Research on Agricultural Green Production in Longyang District JIANG Tailing, LUO Xin, BAI Lina, DUAN Chunfang, ZHOU Yingchun, LIU Qian, YAN Wei, XIAO Mingkun, LI Linhong, LIU Guanghua 2022, 12 (6):  74-78.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0033 Abstract + ( 217 )   HTML ( 3 )   PDF ( 1206KB )   ( 201 ) Green production is the foundation of green economy. Pursuing agricultural green production method is not only a requirement by people’s health development, but also an inevitable choice for agricultural sustainable development. This paper analyzed the current situation, adjustment measures and constraints of agricultural green production in Longyang District, and proposed to promote agricultural green production continuously from building high-standard green production bases, implementing regional cooperation models, and operating agricultural green production social service models, so as to further accelerate the pace of modern ecological circular agriculture, enhance the quality and safety of agricultural products, improve people’s living environment and strengthen the support of green agricultural technology in Yunnan.

  The Current Situation and Development Countermeasures of Rape Industry in Yuxi LI Yanlan, ZHU Zifen, ZHANG Yue, JIANG Xintong, PU Lianrong, LUO Zhimin, MA Jianming, AN Zhengyun, LIU Jianjian, SHEN Xianghong, HU Xinzhou, LI Xiang, YANG Jincheng 2022, 12 (6):  79-84.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0034 Abstract + ( 405 )   HTML ( 5 )   PDF ( 1216KB )   ( 227 ) Through questionnaire survey on rape production in Yuxi City, we can master the development of the local rape industry. According to the study, the development of rape industry in Yuxi City is faced with some problems, such as insufficient investment in scientific research, low degree of mechanization, low degree of planting scale, high planting risk, and the market has not been form by high price for high quality. It is proposed to increase financial input and strengthen scientific and technological support; improve the level of agricultural mechanization to effectively reduce production cost; promote the integrated development of the primary, secondary and tertiary industries of rape; perfect rape planting insurance system to reduce planting risk; and support leading enterprises to establish high quality raw material production base to form a purchase system of high price for high quality, so as to provide reference for the sustainable and healthy development of rape industry in Yuxi City.

  Current Status, Problems and Countermeasures of Cultivated Land Rotation and Fallow Subsidy ZHU Xiaoling 2022, 12 (6):  85-89.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0128 Abstract + ( 788 )   HTML ( 3 )   PDF ( 986KB )   ( 397 ) The key to the operation of the cultivated land rotation and fallow system is to solve the problem of rotation and fallow subsidy. China’s crop rotation and fallow mechanism started late, and its development is not yet perfect. In terms of crop rotation and fallow subsidy, there are problems such as the lack of legal system protection, the single source of subsidy funds, the unclear subsidy target, the difficulty of determining subsidy standards, and the lack of effective supervision of the use of subsidy funds. In order to ensure further advancement of the pilot cultivated land rotation and fallow, this research proposes to improve the legal guarantee mechanism of rotation and fallow subsidy, actively broaden the sources of subsidy funds, clarify the subsidy targets, formulate reasonable subsidy standards, strengthen the supervision of the use of subsidy funds and so on.

  SWOT Analysis and Development Strategy of Agricultural Product Processing Industry in Zhumadian City in the New Development Stage MENG Zhipeng, GUO Haiyuan, LIU Shihan 2022, 12 (6):  90-94.  DOI: 10.11923/j.issn.2095-4050.cjas2022-0044 Abstract + ( 404 )   HTML ( 8 )   PDF ( 1317KB )   ( 345 ) SWOT analysis was used to comprehensively analyze the advantages (S), disadvantages (W), opportunities (O) and risks (T) of agricultural product processing industry of Zhumadian City in the new development stage. The results showed that the advantages were greater than the disadvantages, and the opportunities were greater than the challenges. Growth strategy (SO) and coping strategy (ST) should be focused on, meanwhile, reverse strategy (WO) and defensive strategy (WT) should also be considered, therefore the development strategy of agricultural product processing industry in Zhumadian City was comprehensively determined. Some suggestions were put forward such as cultivating and introducing agricultural product processing enterprises, expanding the scale of processing industry, improving the deep processing ability of agricultural products, giving full play to the pulling ability of platform carrier, promoting transformation and upgrading of agricultural product processing industry, and increasing policy support.

  Brand Building of Leisure Agriculture and Rural Tourism: Taking National Star-Rated Enterprises of Leisure Agriculture and Rural Tourism as an Example YI Neng, XIN Xin, ZHU Shuyue, LUO Hairong, MEI Xueying, ZHOU Jiantao, SU Guodong 2022, 12 (6):  95-100.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0156 Abstract + ( 289 )   HTML ( 9 )   PDF ( 1179KB )   ( 234 ) This study summarized the spatial distribution pattern of the demonstration enterprises of leisure agriculture and explored the factors affecting the distribution by consulting relevant literature and analyzing the distribution of star-rated enterprises nationwide and the proportions of different star-rated enterprises in various provinces (municipalities). On this basis, countermeasures and suggestions on the establishment of star-rated enterprise brand and the high-quality development of the industry were put forward. The study found that the development of the leisure agriculture industry is closely related to the level of economic development, natural resource endowments and the foundation of the leisure agriculture industry. At present, there are still problems in the creation of star-rated enterprises, such as the urgent need to update the evaluation index system, to improve the organization selection mode, and to enhance the management exit mechanism. Hence, it is recommended that the creation of star-rated enterprises should take innovative management methods, improve creation criteria, exploit brand value, guide active participation, strengthen training, and carry out dynamic monitoring, in an effort to promote the high-quality development of leisure agricultural brand building.