危害桃树的蚜虫一般为桃赤蚜和桃粉蚜。4月下旬-5月是为害盛期,5-6月两种蚜虫分别产生有翅蚜迁飞到其他农作物与禾本科植物上为害。桃树被害后叶片苍白卷缩,影响光合作用,严重时叶片脱落,影响产量与花芽形成,削弱树势。蚜虫排泄的蜜露、污染叶面及枝梢,使桃树生理作用受阻滞,常造成烟煤病,加速早期落叶,影响生长。 Aphids that endanger peach trees are generally peach aphids and peach aphids. In late April-May is the damaging period, May-June two aphids were ants flew to other crops and grasses damage. After the peach tree is damaged, the leaves are pale and crimp, affecting the photosynthesis. In severe cases, the leaves fall off, affecting the yield and flower bud formation and weakening the tree vigor. Honeydew aphid excretion, pollution of the foliage and shoots, peach physiological role of the block, often resulting in bituminous coal disease, accelerated early deciduous, affecting growth.