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棉粉虱是一种杂食性的害虫,有的地方叫烟粉虱,有的叫白粉虱,其成虫、若虫均可为害农作物。近几年随着转基因抗虫棉的推广,在棉花生产上常出现暴发性的为害,同时它们还危及烟草、茄类、瓜类、豆类等科所属的400～500种作物。今年,有关植物保护部门预测,棉粉虱为中等偏重发生年。据近年来的观察,棉粉虱的发生程度常与气候及周边环境关系极大。当7月下旬及8～9月高温干旱持续时间越长,棉田四周蔬菜作物越多时,棉粉虱的发生程度就越重,发生面就越宽,每个月几乎都有一次种群高峰出现,最
Cottonfly is a omnivorous pest, in some places called Bemisia tabaci, some called whitefly, its adult, nymphs can be harmful to crops. In recent years, with the popularization of transgenic insect-resistant cotton, there are often outbreaks of damage in the cotton production. At the same time, they also endanger the 400 to 500 crops belonging to the tobacco, eggplant, melon and bean families. This year, the plant protection department predicted that cotton whitefly was moderately-weighted year. According to recent observations, the incidence of cotton whitefly often have a great relationship with the climate and the surrounding environment. When the duration of high temperature and drought in late July and August ~ September was longer and the number of vegetable crops around the cotton fields was more, the occurrence of cotton whitefly was heavier and the occurrence area was wider. Almost every one month there appeared a population peak, most