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主要为害烟草的是绿桃蚜,多数是无翼型的.蚜虫吸食烟株汁液损害了烟叶生长及产量,同时它们排泄出一种甜而粘的蜜露,使一种黑色霉菌在蜜露上发展从而降低了烟叶的品质和产量,蚜虫也能传染某些病毒.气候对蚜虫发生的作用很大,冬季暖和能保存较多的蚜虫的越冬卵,5月份气候温暖使蚜虫形成群落更顺利,而在7月末、8月初蚜虫在有利的条件下大量集聚.使用杀虫剂必须彻底地喷布于蚜虫集聚的烟草叶背,使能接触蚜虫.马拉硫磷在24～30℃时效果较好,而在低于18.5℃时无效.西维因等
Mainly harmful to tobacco are green peach aphids, most of which are airfoilless. Aphid smoky tobacco juice harms leaf growth and yield while they excrete a sweet and sticky honeydew, leaving a black mold on honeydew The development and thus reduce the quality and yield of tobacco, aphids can also be infected with some viruses.Climate has a great role in the occurrence of aphids, warm in winter to save more aphids overwintering eggs, warm weather in May so that aphids form community more smoothly, In the end of July and early August, the aphids accumulate under favorable conditions and the pesticide must be thoroughly sprayed on the backs of the aphid-laden tobacco leaves to make contact with the aphids.Malathosine is effective at 24-30 ° C Good, but less than 18.5 ℃ invalid