蚜虫不仅直接刺吸蔬菜汁液,造成蔬菜生长不良,还会传播病毒,对蔬菜危害更大。1.菜蚜(甘蓝蚜)的为害与发生(1)为害状况本地蔬菜上发生的蚜虫有好几种,如甘蓝蚜、烟蚜、萝卜蚜等。主要是甘蓝蚜,属同翅目蚜科,农村一般俗称菜蚜。甘蓝蚜喜欢为害叶上多蜡少毛的十字花科蔬菜和油菜,如甘蓝、球茎甘蓝、花椰菜等。蚜虫在菜叶的正反面均有发生,菜叶背面数更多。蚜虫 Aphids not only directly suck vegetable juice, resulting in poor growth of vegetables, but also spread the virus, more harmful to vegetables. 1. Vegetable aphid (cabbage aphid) damage and occurrence (1) the damage situation There are several local aphids on vegetables, such as cabbage aphid, tobacco aphid, radish aphids and so on. Main cabbage aphids, is a Homoptera aphid families, commonly known in rural areas aphids. Cabbage aphids like waxy bristles on the leaves of cruciferous vegetables and rape, such as cabbage, kohlrabi, cauliflower and so on. Aphids in the front and back of the leaves have occurred, the back of the leaves more. aphid