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1980～1982年,针对油菜亩产300斤以上,在不同时期施用氮素化肥对油菜器官生长和产量的影响进行研究,以明确油菜亩产300～400斤,氮素化肥的合理施用时期.试验地为中稻茬,轻壤土,肥力中上等.供试品种扬2008.试验处理见表1.田间设计采用随机区组排列,小区面积1981年为1.5厘,1982年为2.0厘,重复三次.株行距0.6×1.2尺.9月20日播种,分别于10月26日、11月1日移栽.基肥每亩施堆肥100担,菜籽饼100
From 1980 to 1982, in order to study the effects of nitrogenous fertilizer on the growth and yield of rapeseed (Brassica napus L.) at a rate of 300 kg per mu for more than 300 kg of rapeseed, the reasonable application period of nitrogenous fertilizer was 300 ~ 400 kg per mu. For the middle crop stubble, light loam, fertility in the upper for the test varieties Yang 2008. Test treatment in Table 1. Field design using random block arrangement, the plot area in 1981 was 1.5% in 1982 to 2.0%, repeated three times. Plant spacing of 0.6 × 1.2 feet. Sept. 20 planting, respectively, on October 26, November 1 transplanting. The base fertilizer 100 mu per mu composting, rapeseed cake 100