苹果绵蚜是国内检疫性害虫,我国局部地区有分布,省内仅旅大市的部分县有发生.为害情况:苹果绵蚜主要为害苹果,对山丁子、山楂、海棠也可为害.苹果绵蚜喜群集在树体伤口、剪锯口、老皮裂缝、新梢叶腋、果实及根部、刺吸为害.根和枝条被害后,形成瘤状突起,影响养份、水份的输导,使树势衰弱,结果时间推迟,产量降低.形态与规律:苹果绵蚜的若虫共分为4龄,黄褐色至赤褐色,喙伸到 Apple aphid is a domestic quarantine pest, there are some areas in our country, the province only brigade in some counties have occurred. Harm situation: Apple aphid mainly harm apples, butchery, hawthorn, begonia can also be harmful. Aphids hi clusters in the tree wounds, cut saw kerf, cracks in the old skin, axillary axillary shoots, fruits and roots, sucking suction damage. After the root and shoot damage, the formation of tumor-like protrusions, affecting nutrient and water transport, Morphological weakness, the results of the time delay, reduce production. Morphology and laws: the apple aphid nymphs are divided into 4 age groups, brown to auburn, beak reach