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采用二次回归正交旋转组合设计方法,建立了我所新选大穗型玉米南单七号的产量形成模型,为进一步推广提供科学依据。南单七号籽粒产量(Y)与密度(X_1)、氮肥(X_2)、磷肥(X_3)和有机肥(X_4)的产量形成模型
The quadratic regression orthogonal rotation combination design method was used to establish the yield formation model of the newly selected big ear type maize Nan Dan No.7 in order to provide a scientific basis for further popularization. Yield formation model of grain yield (Y) and density (X_1), nitrogen fertilizer (X_2), phosphate fertilizer (X_3) and organic fertilizer (X_4)