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在冬小麦夏直播花生两熟制条件下 ,采用二次饱和 D—最优设计方法 ,建立全年氮肥用量及其分配比例与小麦、花生产量及效益的数学模型 ,探讨了全年肥料用量与分配比例两因素对小麦和花生的产量效应及全年总产效应 ,提出了小麦花生全年总产 >1 2 0 0 0 kg/hm2和全年效益 >2 3 0 0 0元 /hm2的施肥措施和方案。
Under the conditions of two winter wheat-planting direct-seeded peanuts, the mathematical model of annual nitrogen use and its distribution proportion and yield and benefit of wheat and peanut were established by using the second-order saturated D-optimal design method. The effects of annual fertilizer use and distribution Proportion of two factors on wheat and peanut yield and the annual total yield effect, put forward a wheat peanut annual total output> 120 000 kg / hm2 and the annual benefit> 2300 yuan / hm2 fertilization measures And program.