论文部分内容阅读
苹果瘤蚜又名卷叶蚜虫,它的为害特点是卷叶性非常强。它是我省目前为害苹果树的三种蚜虫中最为严重的一种。其成虫和若虫均为害苹果树的新芽、嫩叶及果实。被害幼叶常出现红斑,叶缘向背面纵卷、最后变褐黑色枯干死亡。从而影响新梢生长发育。受害严重的枝条,来年多枯死。幼果被害后果面呈许多不规整的红斑。斑痕凹陷,危害严重时果实变畸
Apple aphid, also known as curly leaf aphids, its damage is characterized by very strong leaf curl. It is the most serious of the three kinds of aphids in the province currently affecting apple trees. The adults and nymphs are harmful apple tree sprouts, young leaves and fruits. Victims of young leaves often appear erythema, leaf margin to the back of the vertical roll, the last brown black withered death. Thus affecting the growth and development of shoots. Serious branches, the next year more dead. The consequences of young fruit damage was irregular many irregular erythema. Depression marks, serious damage to the fruit deformed