【摘要】 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 。更多还原

【Abstract】 This paper researched process which rape accelerated dry matter, regulation which nitrogen, phosphorus and potassium were needed, and their content in respective organ. To get 100kg seed, rape need to absorb nitrogen 9.48kg, phosphorus 3.61kg, potassium 8.89kg. The rate among them is 1:0.38:0.94, and this paper also researched proper quantity of potassium manure application, it is 135kg per hectare.更多还原