Abstract:

Three corn varieties with different levels of pest resistance were selected to study the effects of pest resistance of corn varieties on arthropod community in corn fields. The research results showed that pest resistance of corn varieties had no evident effects on the species richness but had obvious effects on the evenness and diversity of arthropod community in corn fields. The evenness and diversity of arthropod community and the ratio of natural enemies to pests in the fields of corn variety with relatively high level of pest resistance were higher than those in the fields of corn variety with relatively low level of pest resistance. These results indicated that the pest resistance of corn varieties was helpful to increase the stability of arthropod community and the natural control effect of natural enemies on insect pests in corn fields.