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本研究采用二次通用旋转回归设计测得参数，建立了氮、磷肥、种植密度与产量等指标的数学模型；得出三者对产量的影响为：磷肥＞种植密度＞氮肥；通过模拟筛选出每６６６．７ｍ２产量４５０ｋｇ以上时三者的适宜范围。并求出最大解４７２ｋｇ时，每６６６．７ｍ２施氮１０．３２ｋｇ、五氧化二磷６．１４ｋｇ、基本苗８．９６万，及其相应的最大群体、叶面积系数、产量构成因素指标。同时还对各因子的独立及交互效应进行了分析。
In this study, the parameters were established by quadratic universal rotation regression, and the mathematical models of nitrogen, phosphate fertilizer, planting density and yield were established. The results showed that the three effects on yield were: phosphate fertilizer> planting density> nitrogen fertilizer; Each 666.7m2 yield more than 450kg when the appropriate range of the three. When the maximum solution was 472kg, the nitrogen application rate was 10.32kg per 666.7m2, 6.14kg phosphorus pentaoxide, 89,600 basic seedlings and their corresponding maximum population, leaf area index and yield components. At the same time, the independent and interactive effects of each factor are also analyzed.