日光温室内的白粉虱危害在黑龙江地区日趋严重。白粉虱寄生范围很广 ,繁殖速度快 ,故菜农一致反映刚刚用完药 ,而白粉虱又很快出现 ,防治效果不佳。一、为害特点成虫和幼虫吸取植物汁液 ,被害叶片褪绿、变黄、萎焉 ,甚至全株枯死。此外 ,它的成虫幼虫能分泌大量蜜露 ,污染植物 The harmfulness of whitefly in sunlight greenhouse is getting worse in Heilongjiang area. Whiteflies louse a wide range of parasites, propagation speed, so the farmers consistently reflect the just finished drug, and whiteflies and soon appeared, the control effect is not good. First, the damage characteristics Adult and larvae to draw plant juice, the victim leaves chlorotic, yellowing, wilting, and even whole plant dead. In addition, its adult larvae can secrete large amounts of honey dew, polluting plants