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分析了棉花“3414”试验资料,认为将二元函数求偏导求解函数最大值的理论直接推广到三元二次回归模型求解施肥技术参数的做法值得商榷,提出采用模拟仿真因素取值的频率分析求解出氮、磷、钾3因素95%的置信区间及其对应产量的方法,这种方法得出的施肥量有一定的幅度,便于在生产实践中因苗制宜,看苗促控,灵活掌握。
The experimental data of cotton “3414 ” are analyzed. It is argued that the theory of finding the maximum value of the partial derivative function of the binary function is directly extended to the ternary quadratic regression model to solve the technical parameters of fertilization. The proposed method adopts the value of the simulation factor Frequency analysis to find the 95% confidence interval of the three factors of nitrogen, phosphorus and potassium and their corresponding yield method, the amount of fertilizer obtained by this method has a certain range, in the production practice for the convenience of the vaccine, to see Miao Jian Control, flexible control.