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通过田间调查和人工接种，首次发现苹果根爪绵蚜是在苹果树根部为害的重要新害虫，梨九绵蚜和榆绵蚜是在梨树根部为害的重要新害虫。这３种绵蚜均营异寄主全周期生活，其原生寄主为榆，苹果根爪绵蚜的次生寄主为苹果，梨九绵蚜和榆绵蚜的次生寄主为梨。６～１０月份，这３种绵蚜以无翅侨蚜和有翅性母在果树根部为害。春季在绵蚜迁入之前，采用果园全田覆盖地膜的办法，可阻隔其入土，进而可使果树根部全年免受其为害；夏季在绵蚜为害期，采用磷化铝地下熏蒸的办法，杀虫效果明显。
Through field investigation and artificial inoculation, it was first discovered that the apple rootworm Aphis gossypii is an important new pest which is harmed in the roots of apple trees. The pear pests Aphis gossypii and the cotton budworm Aphis gossypii are important new pests damaged in the roots of pear trees. These three kinds of cotton aphids all camp heterosexual full-cycle life, the primary host is elm, Apple Clawed Aphids secondary host for the apple, Pear nine cotton aphid and cotton aphid secondary host pear. From June to October, these three kinds of cotton aphids were damaged by the fruitless winged aphids and winged sexes. Before the cotton aphids moved into the spring, the method of covering the mulch with the whole field of the orchard could be used to prevent the root of the fruit tree from being damaged throughout the year. In summer, when the moth aphid was damaged, underground fumigation with aluminum phosphide was used, Insecticidal effect is obvious.