油菜是洞庭湖棉区的主要冬作物,过去种植密度一般偏稀,因而单产不高。近年来种植密度提高到每亩八千至一万株,再加上其它措施配合,油菜单产提高很快。在增加密度的情况下,采用哪种种植方式比较合理,则是一个需要解决的问题。以往曾有报道,认为随着油菜种植密度的增加,以采取宽行窄株的种植方式较好。但研究不够深入。为了弄清不同种植方式对油菜生长发育和产量形成的影响,特进行本研究。 Rape is the main winter crop in the Dongting Lake cotton area. In the past, planting density was generally weaker and thus yield was not high. In recent years, planting density increased to eight thousand to ten thousand per acre, together with other measures, rapeseed yield increased rapidly. In the case of increasing density, what kind of planting method is more reasonable, it is a problem to be solved. It has been reported in the past that with the increase of planting density of rapeseed, it is better to adopt the planting mode of narrow row and wide row. But the study is not deep enough. In order to understand the effects of different planting methods on rape growth and yield formation, this study was carried out.