摘要
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.
出处
《沈阳农业大学学报》
CAS
CSCD
2001年第1期17-21,共5页
Journal of Shenyang Agricultural University
基金
辽宁省"九五"重点攻关项目(97201037)
关键词
玉米
氮
磷
钾
密度
优化栽培措施
maize
high-yield and high-benefit cultivation
N
P
K
density