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采用二次饱和D -最优设计 ,通过田间试验 ,分析了中原单 32号玉米籽粒产量和生物学产量与种植密度、施氮量、施磷量之间的回归关系 ,建立了数学模型。在对回归模型进行系统解析的基础上 ,通过计算机寻优 ,得出了 3套优化农艺措施方案 ,其中 ,以籽粒产量为目标约束条件的 1套 ,以生物学产量为目标约束条件的 2套。在试验地的气候和生产条件下 ,欲实现中原单 32号饲用玉米较高籽粒和生物学产量 ,应着重掌握适宜的氮肥用量 ,同时注意合理密植。
Based on the second - order saturation D - optimal design, the regression relationship between grain yield and biological yield of Zhongyuan No. 32 maize and its planting density, nitrogen application rate and phosphorus application rate was analyzed through field experiments. A mathematical model was established. Based on the systematic analysis of the regression model, three sets of optimized agronomic measures were obtained through computer optimization. Among them, there are two sets of constraints with the target of biomass yield as the target, . Under the climatic and production conditions in the experimental area, in order to realize the higher grain yield and biological yield of single-grain maize Zhongyuan No. 32, it is necessary to lay emphasis on the proper amount of nitrogen fertilizer while paying attention to the rational close planting.