Current issue

• 2021 Vol.11 No.10 Published:20 October 2021

  Gradient Quantitative Evaluation of Water Saving and Drought Resistance Characteristics of Hybrid Rice Combinations Kang Haiqi, Pan Yinghua, Sun Xiaowen, Han Youxue, Gao Lijun, Cao Yan, Gao Ju, Kang Jiarong, Li Xingyue, Zhang Hong 2021, 11 (10):  1-8.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0025 Abstract + ( 336 )   HTML ( 105 )   PDF ( 1421KB )   ( 257 ) To accurately evaluate the water-saving and drought-resistant trait of hybrid rice, study the expression pattern of this trait under the condition of quantitative water control treatment, and establish the quantitative evaluation technology system, four gradient quantitative water control trials were designed, including 100%, 80%, 60% and 40% field capacity. Ten hybrid rice combinations were treated under the four gradients from returning green stage after transplanting to mature stage. The results showed that there were significant differences on absolute water content in soil among the four gradient treatments. Different combinations had significant differences on grain yield per plant with 80% field capacity and 60% field capacity. There were also significant differences on yield drought resistant index and water use efficiency among the gradients. These single indexes were difficult to be directly used for the variety comparison with drought resistance as the distinguishing feature, and without giving consideration to the water use efficiency. Through the construction and calculation analysis of logarithm comprehensive index of drought resistant index with multiple gradients and multiple traits, the overall unified quantitative evaluation index of water-saving and drought-resistant trait was formed. The evaluation results of 10 combinations by the new indexes were consistent with the field observation results on drought resistance. The gradient quantitative evaluation technology system of water-saving and drought-resistant trait of hybrid rice and the logarithm comprehensive index of three drought-resistant indexes with multiple gradients and multiple traits established by the study have the better evaluation effect, and are suitable for accurate evaluation of water-saving and drought-resistant trait of hybrid rice.

  Popularization and Application Strategies of National Approved Wheat ‘Longyu No.5’ with High-yield and Wide-adaptability Shi Wanxi 2021, 11 (10):  9-15.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0035 Abstract + ( 831 )   HTML ( 108 )   PDF ( 1321KB )   ( 246 ) By analyzing the ability of high-yield, stress-resistance, wide adaptability of the national approved wheat ‘Longyu No.5’ and its promotion strategy, the study aims to provide references for high-efficiency breeding and variety promotion of dry land wheat in north China. The characters of new winter wheat variety ‘Longyu No.5’ were analyzed by using the regional experiment and high yield demonstration data of multiple points in north China’s dry land area, including Longdong of Gansu Province. The average yield of ‘Longyu No.5’ was 4922.54 kg/hm2, which was 13.28% higher than that of the control variety, and the yield increasing point (times) rate was 89.97%. The effective ear number was 5.97 million/hm2, the harvest index was 39.6%, and the yield potential in dry land was 6399.0 kg/hm2. In general, more ears and higher harvest index are the basis of realizing high yield potential; cold resistance, drought resistance and disease resistance, high temperature tolerance at later growth stage and small variation of grain weight are the important guarantee for wide adaptability and large-scale extension of ‘Longyu No.5’. In the promotion and application of the variety, the model should include project-based promotion, order-based seed production, contract-based seed breeding, and efforts from research units, local governments, seed industry enterprises and demonstration farmers.

  Multiyear High-yield Analysis of Buckwheat Varieties in Northern Hebei Zhao Shifeng, Cao Lixia, Liu Wenting, Shi Bihong, Liu Junxin, Zhao Xuefeng 2021, 11 (10):  16-22.  DOI: 10.11923/j.issn.2095-4050.cjas20200300059 Abstract + ( 503 )   HTML ( 104 )   PDF ( 1236KB )   ( 318 ) To explore the fertility and adaptability of main application buckwheat varieties in Bashang area of northern Hebei, 4 tartary buckwheat varieties and 2 common buckwheat varieties were used as materials to study for 5 consecutive years. The results showed that all the 6 buckwheat varieties were considered to have good resistance (to drought and barren), water and fertilizer tolerance, and relatively stable yield. ‘American common buckwheat’ was considered to be the most suitable variety of common buckwheat for planting in northern Hebei, with the yield of about 1078.5 kg/hm2, followed by ‘Japanese big grain’ about 970.5 kg/hm2, and common buckwheat required supplementary pollination for yield increase. ‘Jikuqiao No. 2’ was considered to be the most suitable variety of tartary buckwheat for planting in northern Hebei, with the yield of about 2745 kg/hm2, followed by ‘Jikuqiao No. 1’ about 2442.0 kg/hm2 and ‘Chuanqiao No. 1’ about 2395.5 kg/hm2. It can be concluded that the common buckwheat should be used as a reserve crop because of its short growth period, and it is not suitable for early sowing in northern Hebei. The medium ripe tartary buckwheat variety has special adaptability in northern Hebei, with the relatively long growth period, ‘Heifeng No.1’ has high planting risk in better fertility soil. In general, the improvement of cultivation measures could increase the yield of common buckwheat, and both tartary buckwheat and common buckwheat have better adaptability in northern Hebei.

  Adaptability of 30 New Maize Varieties in Northern Henan Wang Changliang, Ai Zhenguang, Yan Lihui, Chang Jianzhi, Li Yanchang, Hou Xianjun 2021, 11 (10):  23-27.  DOI: 10.11923/j.issn.2095-4050.cjas20200300073 Abstract + ( 1248 )   HTML ( 19 )   PDF ( 1190KB )   ( 210 ) With the change of the examination and approval system, a large number of new maize varieties have emerged in the market. In order to select new maize varieties suitable for regional production in northern Henan and guide local maize production, ‘Zhengdan 958’ was used as control to compare the adaptability, stress resistance and harvest of 30 newly approved maize varieties under field condition. The results showed that the growth period of the tested varieties was 114-120 days, and all the varieties could mature normally in northern Henan, and the male and female could meet normally in the flowering period; the yield of the tested varieties was 8726.97-11973.68 kg/hm2, significantly increased compared with that of control. The yield of ‘Yudan 1851’, ‘Dehe 187’, ‘Yunong76’, ‘Zhongbo 510’, ‘Xundan 1538’, and ‘Luoyu 16’ increased by 10.4%, 8.9%, 7.5%, 7.3%, 5.8% and 4.5%, respectively, among them, the water content of ‘Yudan 1851’, ‘Dehe 187’, ‘Yunong76’, ‘Zhongbo 510’ and ‘Xundan 1538’ was relatively low at harvest time, 21.5%, 21.7%, 19.1%, 19.6% and 18.2%, respectively. The results indicate that five of the 30 varieties, such as ‘Xundan 1538’ and so on, have the characteristics of mechanized grain harvesting in northern Henan.

  Young Apple Orchard Intercropping Soybean: Effects on Soybean Yield and Farmland Environment Qu Yang, Wang Kezhen, Kang Junke, Liang Fuqin 2021, 11 (10):  28-32.  DOI: 10.11923/j.issn.2095-4050.cjas20200100005 Abstract + ( 375 )   HTML ( 12 )   PDF ( 1291KB )   ( 296 ) The aim is to provide a theoretical basis for soybean production in the young apple orchards. ‘Qindou 12’ was used as material, and three treatments were set up, including intercropping 5 rows soybean (treatment 1), intercropping 4 rows soybean (treatment 2), intercropping 3 rows (treatment 3) and no intercropping as the control (CK). The soybean yield, soil traits, weed amount, and agricultural microclimate were studied in different treatment conditions. Results showed that treatment 1, treatment 2, treatment 3 had the highest yield in 1-year, 2-year, 3-year orchard, respectively. The yield marginal effect of the same treatment decreased as apple tree-age increased. Compared with CK, intercropping soybean in apple orchard decreased soil volume weight by 8.33%, increased soil moisture content by 13.08%, improved soil organic matter, available N, and available K by 16.67%, 20.33%, and 9.35%, respectively, reduced weed amount by 58.10%, increased the relative humidity by 4.47%, and obtained 160.90% of profit rate. Intercropping soybean in young apple orchard had obvious economic benefit and ecological efficiency, and significant advantages of yield and benefit were found when intercropping 5 rows soybean in 1-year orchard, intercropping 4 rows soybean in 2-year orchard, and intercropping 3 rows soybean in 3-year orchard.

  Rooting Mechanism of Plant Cuttings: A Review Sun Xuelian, Yang Chutong, Hu Ya'nan, Zou Xianhua 2021, 11 (10):  33-40.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0016 Abstract + ( 807 )   HTML ( 36 )   PDF ( 1184KB )   ( 1485 ) Cutting is widely used in production practice as an important technique of asexual reproduction. However, the low cutting rooting rate of some quality plants still restricts the rapid development of cutting propagation technology, and the key to improve the cutting rooting rate of plants is to find out the regulation mechanism. This article summarized the research on the mechanism of cutting rooting of plant from three aspects of morphology and anatomy, physiology and molecular biology during the adventitious root formation. Combined with the current research status at home and abroad, the process and mechanism of adventitious root formation were explained from the morphology and anatomy, the relationship between adventitious root formation and rooting was analyzed. The key molecular regulation mechanism of adventitious root formation and development was clarified. At present, the research on the rooting mechanism of plant cutting has gone deep into the molecular level from anatomy and physiology. Based on the development trend of molecular biology, it is proposed to use genetic engineering to improve the cutting propagation technology of plants, so as to achieve technological innovation, improve the quantity and quality of reproduction and adapt to the needs of production development.

  Investigation and Analysis of Green Prevention and Control in Apple Production in Fengxian, Jiangsu Wang Wei, Wang Shengyong, Li Dehai, Li Yuegang, Bu Qingwei, Qu Shenchun 2021, 11 (10):  41-47.  DOI: 10.11923/j.issn.2095-4050.cjas20190700102 Abstract + ( 376 )   HTML ( 11 )   PDF ( 1241KB )   ( 236 ) To understand the situation of apple production and the green prevention and control in Fengxian in 2017-2018, 13 apple planting villages in Liangzhai, Shizhai, Dashahe and Songlou of Fengxian were surveyed on the basic information of growers, apple production and management, as well as the control of pests and diseases in orchards. The results showed that people in charge in apple orchards in Fengxian were mostly male, and their age on the whole was older, their overall cultural level was lower, and the number of CPC party members or village cadres was less. In the normal climate year (2017), the average yield of apple in Fengxian could reach 29178.6 kg/hm2, with an average price of 2.4 yuan/kg and the gross income of 73608 yuan/hm2. In the year of extreme climate (2018), the output of apple decreased by more than 50%, the average price of apple increased by about 1.8 times, but the total income of growers decreased. The input of pesticides and fertilizers was the most important component of the cost of means of production, accounting for about 40% of the total input, and its proportion was less affected by the fluctuation of the cost of means of production. The high disease incidence in apple orchards included Alternaria mali, Physalospora Piricola, and Valsa mali and Anthracnose also had a certain degree of damage. The high incidences of insect pests were Grapholitha molesta, Aphis citricola, Tetranychus viennesis and Apolygus lucorum. For pests and diseases, all apple growers adopted chemical control methods, while the proportion of growers who used agricultural control, physical control and biological control measures for integrated control was not high. Most of the growers sprayed pesticides 9-12 times per year, the first spraying time was at the end of March or the beginning of April, and the last spraying time was different. Agricultural stores were the main purchasing channel pf pesticides, and most growers chose agricultural stores to prepare pesticides on their behalf. More than half of the growers chose to spray pesticides according to the specific conditions of their orchards. The mechanization of spraying in apple orchards has had a relatively high degree in Fengxian, and at present, the application of small automatic mobile sprayers has exceeded 80%.

  Effects of Different Tissue Powders of Industrial Hemp on Root Growth of Soybean and Maize Ban Dingyue, Li Wenfeng, Li Peng, Li Guangze, Zhang Xiaochen, Zhang Weijun, Guo Chunjing, Xiao Jialei 2021, 11 (10):  48-51.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0026 Abstract + ( 330 )   HTML ( 17 )   PDF ( 1257KB )   ( 258 ) The cultivation, development and application of industrial hemp have become an important industry of major companies in the world, and play an important role in the structural adjustment of planting industry. In this study, we mixed dried powder from root and flower and seed from industrial hemp at maturation period with black soil (volume 1:3) for pot experiment to analyze the effects of different treatments on root growth of soybean and maize. The results showed that dry powder of industrial hemp root increased the dry weight of soybean root by 1.67 times that of the control. The dry powder of flower and seed increased the dry weight of maize root by 18.0% compared with that of the control. Dry powder of industrial hemp root increased root length, root surface area and root volume of soybean significantly, but decreased the average root diameter; dry powder of root and dry powder of flower and seed significantly increased root length, root surface area, root volume of maize and the number of root tip, but was not conducive to the increase of the average root diameter. In conclusion, the effects of dry powder of industrial hemp from different tissues on monocotyledon and cotyledon are different, and the study could provide theoretical guidance and technical support for the research and development of industrial hemp in agrochemical products.

  Climatic Potential Productivity of Natural Grassland in Huangnan Li Yanlin, Wen Xia, Ding Peihua, Wu Baoqing 2021, 11 (10):  52-56.  DOI: 10.11923/j.issn.2095-4050.cjas20190700117 Abstract + ( 249 )   HTML ( 10 )   PDF ( 1358KB )   ( 246 ) The paper aims to make full use of climate resources and rationally arrange the agricultural and animal husbandry production. Based on the meteorological data of 4 counties and stations in Huangnan Prefecture from 1961 to 2018, we estimated the climatic potential productivity of local natural grassland by Miami model and Tharnthwaite Memorial model, analyzed the main influencing factors and simulated the response of climatic potential productivity under different climate backgrounds. The results show that: Tongren with better water-heat coordination is the area with the greatest climate potential productivity in Huangnan Prefecture, the smallest climate potential productivity is in Zeku with the worst water-heat coordination, the climate potential productivity is mainly limited by temperature in southern Huangnan and precipitation in northern Huangnan. When the climate changes to warm and wet, it is advantageous to increase the climatic productivity of grassland in Huangnan; when the climate changes to cold and dry, it is extremely disadvantageous to increase the climatic productivity of grassland in Huangnan.

  Climate Response for Gozhacuo Area Change in Northwest Tibetan Plateau Zhang Weihua, Deji Yangzong, Pingcuo Wangdan, Li Rong 2021, 11 (10):  57-62.  DOI: 10.11923/j.issn.2095-4050.cjas20191200314 Abstract + ( 448 )   HTML ( 15 )   PDF ( 1918KB )   ( 274 ) Plateau inland lakes, as an indicator of their sensitivity to climate change, are often used to analyze the trend of climate change in this region, providing scientific data support for climate prediction and ecological meteorological services. Based on the 1975 Guozhacuo topographic map, TM/ETM+ in 1992 to 2018 and satellite remote sensing image data, the spatial and temporal heterogeneity in recent 40 years and the lake area with climate response were analyzed. The results showed that (1) Guozhacuo area was shrinking in a fluctuant way, by 3.22 km2 with the rate of 1.30%, and the shrinking area mainly located in the outlet of Tianshui River and Chongce River; (2) the change of lake area and annual average temperature comprehensively reflected that the climate trend of the region before the 1990s was warm and wet, then changed to warm and dry; (3) the annual average temperature was the main influencing factor for the shrinking of the lake, the hysteresis of the annual average precipitation affected the glacier, and then indirectly influenced the lake area, and the annual average evaporation change responded obviously to the significant variation of the lake area.

  Nandina domestica ‘Harbour Dwarf’: Tissue Culture and Rapid Propagation Zhang Junlin, Fan Jing, Hu Yuchun, Yang Hao, Hu Shaoqing, Shen Bochun 2021, 11 (10):  63-68.  DOI: 10.11923/j.issn.2095-4050.cjas20200300087 Abstract + ( 936 )   HTML ( 16 )   PDF ( 2336KB )   ( 468 ) The aim of this study is to establish a system of tissue culture and seedling production for Nandina domestica ‘Harbour Dwarf’. The stem segments of semi-lignified band buds were used as explants to conduct regeneration study. The comparative experiments, completely randomized orthogonal experiment design of L9(34), range analysis, significance test and LSD multiply comparative analysis were used to discuss the optimal culture medium. The results showed that the highest frequency of shoot induction (71.77%) and survival rate (85.51%) were achieved on MS + 6-BA 2.0 mg/L + IBA 0.1 mg/L + sucrose 30 g/L. The highest proliferation coefficient (6.3) was obtained on WPM +6-BA 1.5 mg/L + IBA 0.01 mg/L + sucrose 30 g/L. Microshoots exhibited best rooting response on 1/2 MS+ IBA 0.5 mg/L + NAA 1.0 mg/L + sucrose 20 g/L + AC 0.2 g/L by producing the highest frequency of root formation (97.63%). Rooted plantlets were transferred to artificial mixture medium (peat: perlite=3:2.V/V) under the green house condition with the survival rate up to 96.67%. An efficient propagation system of Nandina domestica ‘Harbour Dwarf’ was established, and the plantlets could steadily inherit the character of parents. The present system provides technical support for large scale plant production.

  Effects of Biological Carbon and Water Regulation on Photosynthetic Characteristics of Flue-cured Tobacco Fu Changwu, Wang Zufu, Song Jiaqing, Hou Xiangwen, Qin Xiao, Dai Xi, Yuan Mouzhi, Yao Wang 2021, 11 (10):  69-74.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0122 Abstract + ( 287 )   HTML ( 10 )   PDF ( 1358KB )   ( 312 ) To explore the effects of different water regulation measures on photosynthetic characteristics of flue-cured tobacco after the application of biochar, field experiments were conducted to study the changes of photosynthetic characteristics of flue-cured tobacco at different growth stages and their correlation, relative chlorophyll content (SPAD) and economic traits. The results showed that after the application of biochar, different water regulation treatments increased the net photosynthetic rate (Pn) of flue-cured tobacco at different growth stages, with the strongest in the vigorous growing stage, followed by the spherical plant stage, and the mature period was relatively weak. Pn was significantly related to physiological and ecological factors. After applying biochar, the Pn of water regulation treatment was mainly affected by stomatal conductance, and the Pn of non-biochar and non-irrigated water treatment (CK) was mainly affected by transpiration. The SPAD value, yield and output value of flue-cured tobacco showed significant differences, and those of the irrigation water of 300 mL/plant every 5 days after the application of biochar were the highest and of CK were the lowest, reaching a significant difference (P<0.05). Therefore, the photosynthetic capacity of tobacco leaves could be promoted by water regulation after biochar application, and the photosynthetic capacity of tobacco leaves is the strongest under irrigation of 300 mL/plant every 5 days after biochar application.

  New Seed-Eating Pea Varieties at Different Altitudes: High Yield and Stability Analysis Li Yanlan, Zhang Chunfan, Li Zaofu, Fei Yong, Wang Chungui, Hu Xinzhou, Liu Jianjian, An Zhengyun, Yu Zonghong, Li Xiang, Li Mingfang, Yang Jincheng 2021, 11 (10):  75-82.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0169 Abstract + ( 343 )   HTML ( 12 )   PDF ( 1268KB )   ( 233 ) To scientifically evaluate the adaptability, high yield and stability of six new autumn eating pea varieties in the central Yunnan mountain area, the new complex range method, AMMI model analysis and regression coefficient method of DPS software were used to analyze the comprehensive performance of new varieties tested at different altitudes in multiple locations within one year. The results showed that with the increase of altitude, the growth period of new pea varieties increased, the disease index showed a downward trend, and the single plant productivity increased gradually. ‘Yunwan 18’ had a very high stability and good adaptability in the three altitude trials. Compared with the control variety, the average yield of ‘Yunwan 18’ reached a very significant level. However, ‘Yunwan 38’ and ‘Yunwan 25’ were unstable varieties. They only had good adaptability at an altitude of 1758 m, and the overall performance was common. ‘Yunwan 17’, ‘Yunwan 53’, and ‘Yunwan 8’ had low yield, low stability and poor performance. They only had a certain degree of adaptability at an altitude of 1572 m, and the overall performance was poor, and they had no promotion value. Taken together, ‘Yunwan 18’ is the best variety of eating pea planted in the central mountain area of Yunnan Province at the altitude of 1500-1900 m. The variety has good stability and high yield in this region, and it is a variety with promotion prospects.

  Investigation on Nutrition Status of Guanxi Pomelo Orchards in Pinghe and Fertilization Suggestions Zhan Ting, Hu Chengxiao, Zhuang Mulai, Li Xiaobin, Lei Jing, Nie Min, Yang Tao, Zhao Xiaohu 2021, 11 (10):  83-89.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0074 Abstract + ( 357 )   HTML ( 12 )   PDF ( 1239KB )   ( 441 ) 30 samples of grapefruit (mainly white variety of Guanxi pomelo), and corresponding samples of soil and leaves were collected from the representative fruit orchards of Xiaoxi, Nansheng, Wuzhai and Banzai in Pinghe, Fujian, and the quality of fruit and the nutrient contents of soil, leaf and fruit were analyzed. The results showed that more than half of the orchard soil samples were strongly acidic, pH < 4.50; the organic matter content was in a suitable range, but the available phosphorus content was too high, the maximum value was 155.7 mg/kg. The contents of medium and trace elements, especially calcium and magnesium, did not reach the rich level. The contents of total phosphorus, iron, copper and boron in the leaves were high, and the contents of phosphorus and iron in 30 orchards were higher than the suitable range. The contents of potassium, magnesium and zinc were the opposite. The highest contents were 1.32%, 0.22% and 8.37 mg/kg, respectively, which belonged to the state of deficiency. The single fruit weight ranged from 0.675 to 1.850 kg (except 2 grapefruit samples), and showed a positive correlation with soil pH. The difference of edible rate was 27.83%, and the main range was concentrated between 75% and 85%. The solid-acid ratio was quite different, with a difference of 12.35. The maximum Vc content was 28.63 mg/100 g. In general, it is suggested that local orchards should reduce the application of phosphorus fertilizer and copper pesticide, increase the application of potassium, calcium and magnesium fertilizer, to increase soil pH, promote the absorption and utilization of fertilizers, and reduce environmental pollution while ensuring fruit quality.

  Nutrients and Mineral Elements in Solenaia oleivora from Huaihe River: Seasonal Variations Ma Xueyan, Sun Guangxing, Wang Lin, Xu Dongpo, Jin Wu, Lv Guohua, Xu Pao, Ding Tuqiang, Wen Haibo, Gu Ruobo 2021, 11 (10):  90-94.  DOI: 10.11923/j.issn.2095-4050.cjas20191200305 Abstract + ( 345 )   HTML ( 10 )   PDF ( 1243KB )   ( 370 ) To evaluate nutritive value of Solenaia oleivora, S.oleivora collected from Huaihe River was used as material, the seasonal variations of nutrients and mineral elements were detected and compared by conventional nutrient composition analysis and biochemical assay. The results showed that flesh contents of S.oleivora collected in March, June, September and December ranged from 58.03% to 62.61%. The flesh content in June was significantly lower than that in December (P < 0.05), but there was no significant difference among June, March and September (P > 0.05), and there was no significant difference among March, September and December (P > 0.05). There was no significant seasonal difference in terms of water content and crude fat (P > 0.05). The crude protein in March was obviously higher than that in June, September and December (P < 0.05), but there was no significant difference among three other seasons (P > 0.05). The ash content in March was significantly lower than that in June, September and December (P < 0.05), while there was no significant difference among three other seasons (P > 0.05). The soft body (dry substances) of S.oleivora from Huaihe River contains 7 essential amino acids and 10 non-essential amino acids. The total amino acid (TAA) ranged from 52.12% to 54.31%, and the essential amino acid (EAA) ranged from 20.57% to 21.94%, and the delicious amino acid (DAA) content was 19.09%-19.43%. There was no significant difference found in TAA, EAA and DAA among the four seasons (P > 0.05). In the six detected mineral elements, Hg was not detected in all samples due to its low level, and there was no significant seasonal difference of other elements including Mn, Fe, Zn, Cu, Cd and Pb. The results indicate that S.oleivora from Huaihe River has relatively high nutritive value and good edible value.

  Application of Triglyceride Fingerprint in Identification of Adulterated Edible Oil Weng Jia, Huang Xiuli, Zhu Wenjuan, Wang Xiaoqin 2021, 11 (10):  95-101.  DOI: 10.11923/j.issn.2095-4050.cjas20190600065 Abstract + ( 356 )   HTML ( 9 )   PDF ( 1665KB )   ( 362 ) To construct the triglyceride fingerprint of olive oil, soybean oil, peanut oil, corn oil, sunflower oil and rapeseed oil, triglycerides of the six edible vegetable oils were isolated by HPLC-ELSD. The data was imported into the traditional Chinese medicine chromatographic fingerprint similarity evaluation system (version 2012) by the average vector method, and the similarity of the fingerprint was analyzed. The results showed that the fingerprint profile of triglycerides was similar among different brands of the same edible vegetable oil, while was significantly different among various edible vegetable oils. Olive oil had low similarity with corn oil, soybean oil, or sunflower oil, and the similarity was 0.233, 0.086 and 0.073, respectively; however, it had high similarity with rapeseed oil and peanut oil, and the similarity was 0.830 and 0.776, respectively. When olive oil was mixed with 10% corn oil, soybean oil, or sunflower oil, the similarity of triglyceride fingerprint was less than 0.90, but the similarity change was not obvious when mixed with rapeseed oil. Area normalization method was used to analyze the characteristic peak of fingerprint, and the detection limit of adulteration ratio was less than 15%. The combination of triglyceride fingerprint and area normalization method can be an effective method for identification the adulteration of edible vegetable oil.

  Dai Song’en’s Contribution to the Start Publication and Resume Publication of Acta Agronomica Sinica Tan Guangwan, Liu Xu, Wang Wenyue, Yang Jiancang, Qi Baozi 2021, 11 (10):  102-105.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0055 Abstract + ( 452 )   HTML ( 11 )   PDF ( 1553KB )   ( 215 ) Acta Agronomica Sinica is the journal of the Crop Science Society of China, which has played an important role in promoting the research of crop science and spreading the theory and technology. Academician Dai Song’en participated in the founding of Acta Agronomica Sinica and served as the first chief editor. In order to study the history of crop journals and have a more comprehensive understanding of the history of crop science, this paper describes the historical process of Dai Song’en's participation in the founding, suspension and resumption of Acta Agronomica Sinica based on historical data and expert interview. It is concluded that Dai Song’en played an important role in the start publication and resume publication of the journal.

  Thoughts and Countermeasures of Agricultural Green Development Based on the Perspective of Ecological Civilization: Take Fujian Province as an Example Liu Penghu, Lai Ruilian, Ye Jing, Wang Yixiang, Weng Boqi 2021, 11 (10):  106-111.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0011 Abstract + ( 400 )   HTML ( 7 )   PDF ( 1256KB )   ( 372 ) The article studied the significance of Xi Jinping's thought on ecological civilization and the implementation of a series of green ideas such as "lucid waters and lush mountains are invaluable assets", analyzed the internal relationship between the construction of ecological civilization and the sustainable development of the countryside, expounded the practice and experience of ecological civilization construction and rural green development of Fujian Province. The authors put forward some thoughts and countermeasures such as taking the four factors (production, ecology, life and life) as the main line, focusing on building a basic implementation system with the government as the leading factor, the village as the platform, and the farmers as the main body, strengthening the sustainable development of industry and the construction of ecological environment management system with public participation; the focuses of the specific countermeasures include guiding the development of rural ecological economy according to the situation, giving a full play to the diversified functions of agriculture, preventing the expansion of rural non-point source pollution, strengthening the publicity and popularization of rural ecological civilization, improving rural residential environment, ensuring green production with a clean environment, promoting the integration of ecology and industrialization, and exploring and establishing the coupling of protection and utilization.

  Research on Green Total Factor Productivity of Chinese Vegetables Based on Malmquist-Luenberger Index Wang Xuejiao, Li Longwei, Geng Zhongzhong, Mao Zhaoqing, Zhao Xiuhua 2021, 11 (10):  112-119.  DOI: 10.11923/j.issn.2095-4050.cjas2021-0039 Abstract + ( 281 )   HTML ( 8 )   PDF ( 1492KB )   ( 309 ) Ensuring that domestic residents can get green, safe and nutritious vegetables anytime and anywhere is an important indicator of the high-quality development of agriculture in China. As the resource environment has increasingly become a hard constraint on economic growth, it is more scientific to use the green total factor productivity to evaluate the economic growth quality than the traditional total factor productivity index. Therefore, based on the cost-benefit data of different varieties of vegetables in China’s 27 provinces from 2011 to 2018, the paper took the emissions of pollutants such as fertilizers as undesired output, and used the Malmquist-Luenberger Index to measure the green total factor productivity of vegetables. It is found that the average annual growth rate of green total factor productivity of vegetables was 1.56% from 2012 to 2018, of which the technology efficiency index was -0.42% and the technology progress index was 1.99%. Among them, the green total factor productivity index of pepper grew the fastest (2.93%), and that of beans grew the slowest (0.49%); the green total factor productivity index of Ningxia pepper and tomato grew the fastest, and that of Fujian radish and eggplant grew fastest. Henan Chinese cabbage, Jiangxi beans, Shandong cucumber, Liaoning potato and Guizhou cabbage had the fastest green total factor productivity growth.

  Status and Countermeasures of Sorghum Industry in Zhejiang Province Zou Guihua, Zheng Xueqiang, Lv Xuegao, Liu Heqin, Liu Xiuhui, Chen Heyun 2021, 11 (10):  120-124.  DOI: 10.11923/j.issn.2095-4050.cjas2020-0140 Abstract + ( 327 )   HTML ( 9 )   PDF ( 1100KB )   ( 506 ) Sorghum plays an important role in the rural revitalization in Zhejiang, to promote the comprehensive development of sorghum industry, the status of production and deep processing of the sorghum industry was summarized. The reasons that restricted the large-scale production, less processed product and limited industry expansion were analyzed. The problems of the lack of governments’ policy guiding and support and the conflict between the market supply and demand were point out. Countermeasures were put forward about strengthening the introduction and cultivation in scientific research institutions, developing the contract sorghum planting, constructing the demonstration bases of elite sorghum varieties and planting, studying the deep processing technology of sorghum products to promote the comprehensively utilized value.