白蜡是华中地区主要行道树种,白蜡棉粉蚧是较难防治的害虫之一。若危害较轻,造成园林树木生长不良,叶片发黄,提早落叶落果。若危害严重,枝条枯死,最后全株死亡。介壳虫排出的蜜露还会诱发煤污病,枝叶表面布满黑霉层,阻碍光合作用,降低观赏价值。防治白蜡棉粉蚧可采用物理、化学、生物等措施综合防治。 White wax is the main tree species in central China, white wax cotton mealybugs is one of the more difficult to control pests. If less harmful, resulting in poor growth of garden trees, leaves yellow, early fall leaves. If the damage is serious, the branches are dead and the whole plant dies. The dewdrops excreted honeydew will also cause coal pollution, foliage surface covered with black mold layer, hinder photosynthesis, reduce ornamental value. Control white wax cotton mealybug can be physical, chemical, biological and other measures comprehensive prevention and treatment.