具有自竞争的赤眼蜂及农药灭螟数学模型的全局定性

GLOBAL QUALITATIVE ANALYSIS OF A MODEL FOR SYNTHETICALLY KILLED OFF LARVAE BY INSECTICIDES AND TRICHOGRAMMA EVANESCENS UNDER IT'S SELF COMPETITIONS

本文对具有自竞争的赤眼蜂及农药灭螟的生态过程，建立了一个数学模型，改进了〔1〕，并对该模型利用作者〔2〕的制图定性新方法，获得模型生态平衡全局稳定的各类参数相关联的条件，为天敌及药物灭螟的综合治理研究，提供参考．

In this paper,an ordinary differential model is provided for mathematically describing the ecosystem of synthetically killed off snout moth's larvae by insecticides and trichogramma evanescens under it's self competitions,As a result,under the global stability of the ecological balance in the model,there are some conditions among the various interrelated parameters to be obtained by a new method of qualitative nomography introduced in〔1〕.It would provide a good reference for the works of fasional biotechnology in ecosystems.