玉米新品种优化栽培措施研究

Optimal Cultivation Measures of New Maize Hybrids Shendan 10 Dongdan 7 and Yingdan 11

采用4因素二次回归正交旋转组合设计 ,研究了氮、磷、钾肥和种植密度对沈单10号、营单11号和东单7号3个玉米新品种产量的影响 ,并通过模拟寻优 ,确定出优化措施方案。沈单10号有4项互作显著 ,营单11号和东单7号分别有1项互作显著 ,因此 ,在玉米栽培中注意肥料间以及肥料与密度间的合理搭配 ,能较好地发挥互作的作用。每公顷的最佳肥料用量及密度分别为 :沈单10号的N263.4～280.5kg,P2O5 75.5～87.2kg,K2O92.0～100.5kg,52790～53635株 ;东单7号 ,N168.8～229.1kg,P2O5 77.0～144.0kg,K2O92.4～137.4kg,51570～51740株 ;营单11号的N191.4～206.3kg,P2O5 41.0～90.6kg,K2O115.1～135.0kg,50487～52281株。

The effects of N, P, K and plant density on three new maize hybrids (Shendan10 dongdan7 and Yingdan11) were studied through the design of 4 factors orthogonal regression rotational combinations. By computer simulating and optimizing, the optimal high-yield and high-benefit cultivation measure combinations of N, P, K and density for each hybrid were chosen. There are 4 significant interaction terms for Shendan10, one for Dongdan7 and one for Yingdan11. The results indicate that suitable amounts of fertilizers of N, P, K could be combined with suitable planting densities for each hybrid. The optimal amount of fertilizer application and density per hector are N 263.4～280.5kg, P2O5 75.5～87.2kg, K2O 92.0～100.5kg and 52790～53635plants for Shendan10, N 168.8～229.1kg, P2O5 77.0～144.0kg, K2O 92.4～137.4kg and 51570～51740 plants for Dongdan7, and N 191.4～206.3kg, P2O5 41.0～90.6kg, K2O 115.1～135.0kg and 50487～52281plants for Yingdan11.