密度和氮磷钾肥对黔油20号产量的影响

Effect of Density,N,P and K Fertilizer on Yield of Qianyou 20

为探索黔油20号的高产优化农艺措施,运用4因素（完全实施）5水平的二次正交旋转回归设计研究了密度、氮、磷、钾肥施用量对杂交油菜黔油20号产量的影响。结果表明：4个因素对产量作用的顺序为氮肥〉磷肥〉密度〉钾肥。单产达240.56 kg/667m2以上的优化农艺措施为密度7 750~8 494株/667m2,纯氮14.085~15.425 kg/667m2,速效磷10.688~11.888 kg/667m2,速效钾11.855~13.425 kg/667m2。

The quadric orthogonal rotational regression design was used to study the effect of density,N,P and K fertilizer on yield of Qianyou 20 for probing the optimized cultivation measure.The results showed that four factors affecting yield was NPdensityK,and the optimized cultivation measure for per unit yield above 240.56kg/667m2 included 7750～8494 plants/667m2,14.085～15.425kg/667m2 pure N,10.688～11.888kg/667m2 P2O5 and 11.855～13.425kg/667m2 K2O respectively.