菜蚜是危害秋季蔬菜的一种重要害虫,尤以危害十字花科蔬菜的桃蚜和萝卜蚜发生最为严重。菜蚜以刺吸式口器吸食寄生植物上的汁液,当蚜虫大量繁殖时,群集在嫩叶上,常使叶片卷缩,变黄,还诱发烟霉病,传播病毒病,危害轻的造成生长不正常,使白菜不能包心,影响商品品质;严重时死株死苗,造成很大经济损失。 Aphis gossypii is an important pest that endangers autumn vegetables, especially the peach aphid and radish aphid which are harmful to cruciferous vegetables. Apis mellifera sucking mouthparts to suck the juice on parasitic plants, when aphids multiply in large numbers, clustering on the young leaves, often make the leaves curl, yellow, but also induced by smokey mildew, viral disease transmission, endangering the light caused Growth is not normal, so that cabbage can not be catered for, affecting the quality of goods; severe dead dead seedlings, resulting in great economic losses.