Abstract:

In order to improve the integrated prevention of pest insects in the jujube yard in Taigu County, pest insects with sucking mouthparts were investigated and analyzed. It was showed that the dominance and individuals of pest insects with sucking mouthparts in extensive management jujube yard (Ⅰ) were more than those in fine management jujube yard (Ⅱ), community composition and temporal dynamics of pest insects with sucking mouthparts in jujube yard were impacted directly by host plant, but variation of biological diversity of pest insects with sucking mouthparts in two kinds of jujube yards had steady seasonal change respectively. Management would not change the biodiversities of pest insects with sucking mouthparts in different season, especially in summer and autumn. So there was little effectiveness relying on biological controlling for pest insects with sucking mouthparts. An appropriate chemical controlling should be applied to pest insects with sucking mouthparts when they were rampant.