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试验研究了油菜生长过程中干物质积累过程 ,及油菜生长过程中N、P、K三大元素的需肥规律和油菜各器官中N、P、K元素的含量。每生产 1 0 0kg油菜籽粒吸收氮 9.4 8kg ,磷3.61kg ,钾 8.89kg ,氮、磷、钾比为 1 :0 .38:0 .94 ;同时根据需肥规律研究了适宜的钾肥用量。适宜的钾肥用量为 1 35kg/hm2 。
The experiment studied the process of dry matter accumulation during rapeseed growth, the rule of fertilizer demand of N, P and K and the content of N, P and K in different organs of rapeseed during the growth of rapeseed. Each production of rapeseed grains of 100kg absorbed 9.48kg, phosphorus 3.61kg, potassium 8.89kg, nitrogen, phosphorus and potassium ratio of 1: 0.38: 0.94; at the same time according to the law of need fertilizer to study the appropriate amount of potash. Appropriate amount of potash for 1 35kg / hm2.