确定动态经济阈值的微计算机模型

经济阈值必须有动态的特征,甚至在同一块田里,也可能每年不一样,本文建立了确定经济阈值的系统模型。它们是由4个模型所组成:1,温度模型;2.种群动态模型;3.防治消费模型;4.产量模型。然后经济阈值这一点,通过计算机模拟,在边际步入等于边际消费时得到。用户可以按照不同的情形输入不同的参数,计算机输出将给出经济阈值及纯收益。 从系统观点看,确定经济阈值可以看作管理农业生态系统寻求最优管理措施。所以,本文提出的模型,也可看作最优管理模型,细节将在文内讨论。

MICRO-COMPUTER MODELS FOR DYNAMICALLY DETERMINING ECONOMIC THRESHOLD

Economic threshold should have dynamic characteristics.It may vary from years to years,even in same field.This paper develops a system models for determining economic threshold.They are consist of four models: 1.temperature m-odel,2.population dynamic models,3.control cost model,4.product yield model. Then economic threshold,at which marginal revenue equals marginal cost, will be determined by computer simulation.User can input different parameters according to different situations. The output of this compu...