摘要
在一定氮钾水平下,适当的磷硼配施可使油菜增产二倍以上,N:P_2O_5:K_2O:硼酸为1:0.7:0.7:0.15%(喷施浓度)时增产最显著。油菜籽中磷硼含量与磷硼肥用量呈正相关,钾含量与施磷量成正相关。适量磷硼配施的籽粒含氮量低于对照。施磷可提高籽粒脂肪含量。
Pot test with rape indicates that right cooperant use of phosphorus and boron fertilizers increased the number of pods, height and weight of stems, improved both the yield and quality of seed. Too much PhosPhorus and boron resulted in the opposite. Application of N, P and K fertilizers at a ratio of N: P_2O_5: K_2O=1: 0.7 : 0.7 followed by spraying B at 0.15% Produced the highest yield and fat content of rape seeds.The contents of PhosPhorus and boron in raPe seeds is positively correlated to the amount of Phosphorus and boron fertilizers applied. Percentage of potassium and fat in seeds increased as P—fertilizer increases, but it was not the case with boron. In the cooperant use of Phosphorus and boron, total nitrogen accumulated in seeds from each fertilized Pot was higher than that of the contrast. But N concentration in seeds was lower than the control because of the biornass-dilution caused by the seed-yield increment.
