棉蚜种群数量动态模型

Aphid Population Numerical Dynamical General Model

本文以棉蚜为例,提出了蚜虫种群数量动态的通用模型,指出蚜虫在一年的生活周期中,从数量动态上可分为几个小周期.每个小周期皆由一个上升段及一个下降段构成,并且上升段是由逻辑斯蒂方程来描述,下降段是由反逻辑斯蒂方程来描述.最后用实际数据进行了拟合,说明其正确性与普遍性.

This paper put forward aphid population numerical dynamical general model with example of cotton aphid,and indicated that aphid s year periodicity can be divided several little periodicities,each of which includes one up-phase and down-phase.The up-phase is de- scribed with Logistic curve,but the down-phase with antilogistic curve.Lastely the paper gave some data to fit it and demonstrated its correction and universal.