In the wheat aphid ecosystem,the natural enemy factor is an important inhibiting factor for the pop-ulation growth of the wheat aphid.The effects of different natural enemy populations on the population dynam-ics of the wheat aphid are different and complex.In this paper,a structural equation model is constructed to de-scribe the change rule of aphid population state under the combined action of multiple natural enemy popula-tions,the comprehensive effects of multiple natural enemy populations on the wheat aphid population are ana-lyzed and the dominant natural enemy population is given,which provide the theoretical basis for the scientific control of insect pests.
关键词
麦蚜种群/天敌因子/结构方程模型
Key words
Wheat aphid population/Natural enemy factor/Structural equation model
维普
万方数据