氮肥不同时期施用量对优质杂交油菜产油量和蛋白质产量的影响

以油研599和三北98油菜为试验材料,运用三元二次通用正交旋转组合设计,研究不同时期施氮量对两品种油菜产油量和蛋白质产量的影响.结果表明:两品种油菜获得最高产油量指标(79.21kg/667m2)时的综合栽培措施方案为活棵肥8.0kg/667m2、开盘肥8.0kg/667m2、腊肥3.4kg/667m2,所占比例分别为...

Effects of Application Time and Quantity of Nitrogen Fertilizer on Oil and Protein Yield of High Quality Hybrid Rape Cultivars

To illustrate the effects of application time and quantity of nitrogen fertilizer on oil and protein yield, quadratic regression orthogonal gyration combination design were carried out using hybrid cultivars ＂Youyan 599＂ and ＂SanBei 98＂, which characterize in high quality. The results showed that the maximum oil yield （79.21 kg/667m2） might be obtained from the application of 8.0 kg/hm2 living rape fertilizer, 8.0 kg/hm2 opening fertilizer, and 3.40 kg/667m2 12th lunar month fertilizer, accounting for 41.24% , 41.24% and 17.52% of the total, respectively. Total application amount of nitrogen fertilizer to get maximum oil yield differed between the two eultivars. However, 8.0 kg/hm2 of living rape fertilizer, 8.0 kg/hm2 of opening fertilizer, and 7.90 kg/667m2of 12th lunar month fertilizer, accounting for 33.47% , 33.47% and 33.06% of the total, respectively should be used to yield maximum protein （49.11 kg/667m2）. No significant difference in total amount of nitrogen fertilizer used was observed to gain maximum protein yield between two eultivars.