叶螨是粮、棉、果、蔬等作物上普遍发生、为害严重的大害虫。由于长期大量使用农药,一方面杀伤了天敌,破坏了生态平衡,使叶螨得以猖獗为害;另方面,叶螨对药剂易于产生抗性,常使新品种农药应用不久,效果就日见低下。因此对于叶螨的生物防治研究,特别是植绥螨的利用研究,日益受到重视。我国曾先后从国外引入在生产中已具成效的智利小植绥螨(Phytoseiuluspersimilis Athias-Henriot)和西方盲 Spider mites are food, cotton, fruit, vegetables and other crops commonly occur, serious damage to large pests. As long-term use of pesticides, on the one hand, killing natural enemies, undermining the ecological balance, spider mites rampant damage; the other hand, spider mites on the drug prone to resistance, often make the new varieties of pesticides soon after the application, the effect on the daily low. Therefore, the study on the biological control of spider mites, especially the use of phytoseiosis mites, has drawn more and more attention. China has introduced from abroad the already successful Chilean phyllostachys sinensis (Phytoseiulus persimilis Athias-Henriot) and western blind