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1.目的意义温室白粉虱已成为棚室蔬菜中危害最广、最重的主要害虫之一。在生产中,对温室白粉虱的化学防治药剂很多,大多采用喷雾形式,但由于温室白粉虱的发育速度快、繁殖力强,易对药剂产生抗药性,所以防治效果不好。有的农户使用高毒的药剂进行防治,也只是在短期内见效,7-9天后白粉虱危害仍然严重,而且对棚室蔬菜的药剂污染也逐渐加重。为了满足绿色食品生产的需要开展对温室白粉虱生物防治的研究迫在眉睫。
1. Purpose Greenhouse whitefly has become one of the most harmful and heaviest pests in greenhouse vegetables. In production, chemical control of greenfly whitefly many chemicals, mostly in the form of spray, but due to greenhouse whitefly rapid development, reproductive ability, easy to drug resistance, so the control effect is not good. Some farmers use highly toxic agents for prevention and treatment, which are only effective in the short term. After 7-9 days, the harm of whitefly is still serious, and the pesticide contamination of greenhouse vegetables is gradually aggravated. In order to meet the need of green food production, it is urgent to study the biological control of whitefly in greenhouse.