青桐木虱是青桐的重要害虫,以成、若虫刺吸为害,若虫还能分泌大量蜡絮而影响树木的光合作用和呼吸作用;5～6月蜡絮纷纷飘落,严重污染周围环境;若虫分泌蜡絮,蜜露导致煤污病发生,从而使青桐遭受双重为害。该虫在合肥一年发生3代,以卵在枝、干上越冬,第一代为重。药剂试验结果表明:以2.5％敌百虫粉剂、苏达粉、80％滴滴畏乳油、40％乐果乳油较为理想。 Green tung tree louse is an important insect of Qingtong, as, nymphs sucking damage, nymphs can secrete a large number of wax floss affecting the photosynthesis and respiration of trees; May to June wax falling, seriously pollute the surrounding environment; nymph secretion Wax, honey dew led to the occurrence of coal pollution, so that Green Tong suffered double damage. The insects occur in Hefei 3 generations a year to eggs in the branches, dry on the winter, the first generation of heavy. Pharmacy test results show that: 2.5% trichlorfon powder, Sudar powder, 80% daugrare EC, 40% dimethoate is more ideal.