一、发生为害情况:葡萄粉虱属同翅目、粉虱科。该虫是葡萄园中的一种突发性害虫,常局部成灾。在我省济南、平度、泰安都曾引起过大发生,近几年在济南已不多见。此虫主要以若虫刺吸葡萄果实和叶片的汁液,并分泌白色粘性蜡质物,易诱致霉菌造成污染。另外在叶片上为害大多在叶的背面,被害处形成一个以若虫为中心的大黄斑,后期黄斑变红,斑块连片,也能造成早期落叶、削弱树势。 First, the occurrence of damage situation: grape whitefly genus Homoptera, whitefly Branch. The worm is a sudden pest in the vineyard, often disaster locally. In our province, Jinan, Pingdu, Tai’an have caused too much, in Jinan in recent years have been rare. The insect nymphs mainly suck grape juice and leaf juice, and the secretion of white sticky waxy, easy to attract mold caused pollution. In addition the damage on the leaves mostly in the back of the leaves, the victims formed a nymph-centered macula, macular red later, patch contiguous, but also can cause early deciduous, weaken the tree potential.