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大棚蔬菜主要虫害有白粉虱、茶黄螨、红蜘蛛、蚜虫、蓟马、潜叶蝇等。(一)白粉虱1、发生与危害白粉虱一年发生10代左右,其中露地6代左右,温室4代左右,世代交替,重叠发生。每年11月至次年4月进入温室危害繁殖。白粉虱群集在叶片背脊,以剌吸式口器吸取植物汁液,使叶片褪绿变黄,甚至全株枯死。此外,白粉虱还分泌大量密露,引起煤污病,降低产量和品质。
Greenhouse vegetable pests have whitefly, tea yellow mites, spider mites, aphids, thrips, leaf miner and so on. (A) whitefly 1, the occurrence and harm Whitefly occurs about 10 generations a year, of which about 6 generations of open field, greenhouse about 4 generations, generations alternately, overlap occurs. From November to April next year into the greenhouse harm. Whitefly louse clustered in the spine of the leaves, to assassinate mouthparts to absorb plant juice, the leaves chlorotic yellow, and even whole plant dead. In addition, whiteflies also secrete a large number of dense dew, causing coal pollution, reduce production and quality.