为害桃树的蚜虫主要桃蚜、桃粉蚜和桃瘤蚜。以成虫、若虫、有翅蚜、无翅蚜群集吮吸叶片和嫩梢的汁液,被害叶片变皱卷缩,影响桃树发育和花芽形成。三种蚜虫年发生都在10代以上,均以卵在桃树的枝梢、芽腋、缝隙、枝杈等处潜伏过冬。次年3～4月孵化为害。夏季繁殖最盛,为害最重,同样开始产生有翅蚜,陆 Peach aphids pests infestation peach aphids, peach aphids and peach aphids. The adults, nymphs, winged aphids, non-winged aphids suck the leaves and shoots juice, the victim leaves wrinkled curly, affecting peach development and flower bud formation. Three kinds of aphids occurred in more than 10 generations, all eggs in the peach branches, shoot axillary, crevices, twigs and other lurking winter. The following year 3 ~ April hatch damage. The highest summer breeding, the most harmful, the same began to have a winged aphids, land