关键词: 油菜, 产量, 播种面积, 施肥现状, CNKI数据库, 计量分析

Abstract: In order to clarify the pattern of rape planting and production and the current situation of rape fertilization in China, CNKI database was used as the information source, and bibliometric method was used to analyze the published amount, research institutions, published types and project support of rape fertilization research literature, the research direction of rape fertilization and fertilizer consumption in main rape producing areas. The results showed that from 2006 to 2019, the overall rape planting area in China was relatively stable. the total rape yield fluctuated, but the change range was small, and the unit yield of rape increased linearly. The middle reaches of the Yangtze river was the main production area of winter rape. In terms of the number of papers published, the annual number of domestic academic research papers on rape fertilization was more than 200 from 2009 to 2017; The number of articles published decreased, with an average annual output of more than 100 from 2018 to 2020. In terms of document issuing institutions and document types, research institutions in the four main rape producing areas were distributed, and the comprehensive advantages of research institutions in the middle reaches of the Yangtze river were more obvious; The type of documents still focuses on technical application. By integrating and analyzing the data of rape fertilizer application from 2016 to 2020, compared with the national recommended fertilizer application, the fertilizer application in the four main rape production areas was high, and there was still room for reduction, especially the excessive application of phosphorus fertilizer in the spring rape area in the north and the high application of nitrogen fertilizer in the winter rape area in the lower reaches of the Yangtze river. Therefore, all regions should focus on the light and simplified production of rape, promote the light and simplified fertilization, and improve the fertilizer utilization efficiency and economic benefits under the conditions of stable yield and weight loss.

Key words: rape, yield, sowing area, fertilization status, CNKI database, quantitative analysis