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通过五因素二次回归正交旋转组合试验,建立了玉米新品种绵单581籽粒产量与种植密度(X1)、施氮量(X2),施磷量(X3),施钾量(X4),施锌量(X5)的数学模型。经用计算机进行因子水平寻优,得出产量在8550 kg/hm2以上的栽培模式为:密度45850~47 538株/hm2,施纯氮260.7~272.3 kg/hm2,施用P2O5为112.45~122.1 kg/hm2,施用K2O为98.3~106.6 kg/hm2,施用ZnO为7.7~9.5 kg/hm2。
Through the five-factor quadratic regression orthogonal rotation combination test, the grain yield and planting density (X1), nitrogen application (X2), phosphorus application (X3) and potassium application (X4) Zinc amount (X5) of the mathematical model. According to the optimization of the factor level by computer, it was concluded that the cultivation patterns with the yield above 8550 kg / hm2 were as follows: the density was 45850 ~ 47 538 plants / hm2, the pure nitrogen was 260.7 ~ 272.3 kg / hm2, the P2O5 was 112.45 ~ 122.1 kg / hm2, application of K2O 98.3 ~ 106.6 kg / hm2, and application of ZnO 7.7 ~ 9.5 kg / hm2.