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温室白粉虱是北方保护地蔬菜的主要害虫,近年来随着商品蔬菜的发展,保护地栽培迅速扩展,大棚温室承包后放松了综合防治,混栽普遍,加之白粉虱对有机磷和拟除虫菊酯类农药产生抗性,致使白粉虱在一些菜区日趋严重发生,已成为防治上的难题。根据白粉虱传播途径多,繁殖快,世代重叠严重,抗药性强的特点,在防治上还必须贯彻“预防为主,综合防治”的策略。目前抓紧对各种保护地,尤其是老菜区的保护地防治,是控制白粉虱扩散的重要环节。一、农业措施:主重是减少虫源。1、生产期间打下的枝杈,枯黄老叶,集中带出室外沤肥。2、
Greenhouse whiteflies is the main pest of vegetables in northern protected areas. With the development of commercial vegetables in recent years, the cultivation of protected areas has rapidly expanded. After greenhouses contracted in greenhouses, comprehensive prevention and control have been relaxed and mixed planting is common. In addition, Pesticides produce resistance, causing whitefly in some vegetable areas is becoming more serious, has become a control problem. According to the route of transmission of the whitefly, the fast propagation, serious overlap of generations and strong resistance, it is also necessary to implement the strategy of “prevention first and comprehensive prevention and control”. At present, pay close attention to the protection of various protected areas, especially the veggie preculture, is an important part of controlling the spread of whitefly. First, agricultural measures: the main thing is to reduce the source of insects. 1, laid during the production of twigs, yellow old leaves, focus on outdoor fertilizer. 2,