蚜虫是园林植物中最常见的害虫之一,由于大量分泌蜜露,因此也叫蜜虫。蚜虫每年发生代数很多,有的蚜虫一年十几代甚至三十多代,多以卵在植物枝条上越冬。蚜虫具有世代交替现象,即春、夏两季为孤雌生殖,秋末冬初为两性生殖。蚜虫种类繁多,绝大多数是农林害虫。园林中常见的蚜虫主要有蚜科的桃蚜、桃粉蚜、棉蚜、瘿棉 Aphids are one of the most common pests in garden plants, and are also called aphids because of the large amount of honeydew that is secreted. Aphids occur many annual algebra, and some aphids a dozen or even more than a dozen generations a year, and more eggs in the winter branches of plants. Aphids alternate generation from generation to generation, that is, parthenogenesis in spring and summer, early autumn and winter for the genital reproduction. A wide range of aphids, the vast majority of agricultural and forestry pests. Aphids common in gardens are aphid families Myzus persicae, peach aphid, cotton aphid, cotton