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Published in last 1 year |  In last 2 years |  In last 3 years |  All Please wait a minute... For Selected: Download Citations EndNote Reference Manager ProCite BibTeX RefWorks Toggle Thumbnails Select Research status on green manure based on the discipline knowledge graph LI Yu-xiang, ZHONG Ju-xin, WANG Lei, JIANG Yun-wei, BIN Huan-jun, LU Bing-qiang, MO Yong-cheng, LI Zhong-yi HUBEI AGRICULTURAL SCIENCES    2022, 61 (5): 5-6.   DOI: 10.14088/j.cnki.issn0439-8114.2022.05.001 Abstract （428）      PDF （3527KB）（159）       Knowledge map    Save In order to provided theoretical reference for researchers to track domestic and international research frontiers, grasp the research direction, the foreign literature of green manure from 1985 to 2020 were visually analyzed based on Web of Science database.Using the bibliometric method, combined with CiteSpace and VOSviewer visual analysis technology, the knowledge graph of green manure research subjects was drawn. The results showed that the number of papers on the theme of green manure was on the rise, and the international journal with the most research papers on green manure was Agronomy journal, followed by Plant and soil and Indian journal of agricultural sciences. From the network of discipline co-occurrence, agronomy had the highest frequency of publications and the strongest influence, while environmental science had the most extensive coverage. In terms of research countries, the United States had published the most papers, followed by India, Brazil, and China. In terms of research institutions, USDA Agricultural Research Institute has published the most papers, followed by the Agriculture and Agri-Food Canada and the Chinese Academy of Agricultural Sciences. In terms of research authors, Researcher Wei-dong Cao of the Chinese Academy of Agricultural Sciences was the scholar with the most research papers in the field of green manure research and had formed a green manure research team, followed by the Ladha team in the Philippines and the Neto team in Brazil. In terms of research hotspots, green manure research focused on the fields of green manure cultivation management, improving soil fertility, nitrogen utilization, carbon emission. In particular, the team of Wei-dong Cao from the Chinese Academy of Agricultural Sciences had made remarkable achievements in improving soil fertility, nutrient utilization, carbon emission in rice fields with the green manure of Astragalus vulgaris and had a strong international influence. Reference | Related Articles | Metrics Select Analysis of chemical fertilizer amount and their contribution to agricultural output in different cities of Jiangxi province LIU Kai-lou, WAN Chang-yan, HU Dan-dan, HU Hui-wen, YU Xi-chu, LI Da-ming, YE Hui-cai, HU Zhi-hua, SONG Hui-jie HUBEI AGRICULTURAL SCIENCES    2022, 61 (5): 11-13.   DOI: 10.14088/j.cnki.issn0439-8114.2022.05.002 Abstract （511）      PDF （1593KB）（415）       Knowledge map    Save Aiming to guide the actions of reducing chemical fertilizer rate and increasing efficiency in different cities of Jiangxi province, the annual amount of chemical fertilizer in different cities was analyzed from 2012 to 2014 based on “Jiangxi statistical yearbooks”, and the correlation between chemical fertilizer rate and agricultural output were quantified. The results showed that, the annual amounts of nitrogen, phosphorus and potassium fertilizers in Ganzhou and Yichun were higher than other cities of Jiangxi province. Meanwhile, the proportion of Nanchang, Jiujiang, Ganzhou, Ji’an, Yichun, Fuzhou, and Shangrao cities for nitrogen, phosphorus and potassium chemical were more than others, and the cumulative proportions of nitrogen, phosphorus and potassium fertilizers in Jiangxi province were 90.09%, 88.77% and 91.29%, respectively. Further analysis showed that the agricultural output could be increased by 4.138 billion to 7.259 billion yuan per year, when the amount of nitrogen, phosphorus, and potassium fertilizer was increased by 10 000 per year. Otherwise, phosphorus and potassium fertilizers were obvious higher than that of nitrogen fertilizer, through the slope of the fitting equations between the chemical fertilizer and the agricultural output. Therefore, in the follow-up action of reducing chemical fertilizer application, Ganzhou and Yichun should be focus on in Jiangxi province for scientific fertilization, especially the contribution of phosphorus and potassium fertilizer to agricultural output. Reference | Related Articles | Metrics page Page 1 of 5 Total 9 records First page Prev page Next page Last page