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苹果瘤蚜又叫苹果卷叶蚜,在我省果产区普遍发生,在一些地方为害十分严重。苹果瘤蚜主要为害苹果、沙果、海棠、山丁子等苹果类果树,它以卵在枝条上的芽缝里剪锯口等处过冬。每年早春芽子萌发时即开始为害,被害叶纵卷并向下弯曲,严重时全树新梢每片叶子都卷起来,很容易辨认。被瘤蚜为害的叶片很快干枯,不易脱落,秋天落叶后,有瘤蚜的枝条上的叶子也不脱落,而枯死在枝条上,瘤蚜为害的新梢节间又短又细,很难形成果枝
Apple aphid, also known as apple leaf aphid, occurred in the fruit producing areas in our province, in some places the damage is very serious. Apple aphids mainly harm apples, sand, Begonia, cedar and other apple-like fruit trees, it is in the bud on the branches of the eggs in the branches cut in the mouth and other winter wintering. Buds germinate in early spring each year when the damage began, the victim leaf curled down and curved down, all the trees in severe grasses shoot each roll up, it is easy to identify. The leaves harmed by the anemia aphid are very dry and do not fall off easily. After the leaves are fallen in autumn, the leaves on the branches of the aphids do not fall off, but the shoots on the branches of aphids are short and thin. Forming fruiting branches