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首先利用因素分析法建立生长作物、病虫害和杀虫剂三者的微分方程。然后建立产量优化模型,通过对锐劲特的最佳供给时间的确定,并将其周期累积作用引入微分方程,得出产量为785.34公斤/亩。最后,建立利润优化模型,通过对锐劲特不同使用阶段和次数的比较,得出农药在作用三个阶段时利润最大,利润值为1450.48元/亩。
First, the use of factor analysis to establish the growth of crops, pests and insecticides three differential equations. Then, a production optimization model was established. Through the determination of the optimal supply time of Regent and the introduction of its periodic accumulation effect into the differential equation, the yield was 785.34 kg / mu. Finally, the profit optimization model is established. By comparing the different phases and frequency of the use of Regent, it can be concluded that the pesticide has the largest profit in the three stages of the operation with a profit of 1,450.48 yuan / mu.