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系统调查表明 ,菜田节肢动物类群包括昆虫 13目 6 5科 16 7种 ,其中害虫 8目 2 3科 79种 ;天敌 6目 18科 4 6种 ;中性昆虫 9目 2 4科 4 2种 ;螨类 2目 3科 4种 ,其中螨类天敌 1种 ;蜘蛛 8科 18种 .不同蔬菜种类上的优势害虫、捕食性天敌和蜘蛛的种类数量、多样性以及优势度的变化差异较大 ,决定菜田节肢动物多样性指数的主要因素为优势集中性指数和物种均匀性的变化 .因此 ,限制化学杀虫剂的使用 ,逐步恢复菜田节肢动物类群多样性 ,尤其是天敌的控制能力 ,在害虫生态控制中取着重要的作用 .
The systematic investigation showed that the arthropod groups in the vegetable field included 13 orders, 6 families, 16 7 insects, among which, 8 orders, 23 families, 79 species of pests, 6 families, 18 families, 4 6 natural enemies, 9 families, 24 families, 4 species, There were 4 species of 2 species, 3 species of mites, 1 species of mites and 18 species of 8 species of spiders. There were significant differences in the number, diversity and dominance of dominant pests, predators and spiders among different vegetable species , The main factors that determine the index of arthropod diversity in vegetable fields are the changes in dominant concentration index and species homogeneity.Therefore, the use of chemical insecticides is limited, and the diversity of arthropod groups in vegetable fields is gradually restored, especially the control ability of natural enemies , Plays an important role in pest ecological control.