棉蚜是棉花苗期主要害虫,广泛发生于全国棉区,已成为各地棉区的主要害虫之一,也是影响棉花产量和品质的主要因素之一。危害特点。棉蚜的寄主很多,据介绍,共有寄主植物74科285种,在我国棉区夏季寄主有棉花、瓜类、菊科、黄麻、红麻、茄科和苋科植物等。越冬寄主有木槿、花椒、石榴等木本植物和夏至草、紫花地丁、苦荬菜等草本植物。棉蚜以成蚜和若蚜群集于叶背和嫩头上刺吸汁液,被害叶片向背面卷曲或皱缩, Cotton aphid is a major pest of cotton seedling stage, which occurs widely in the cotton area of ​​the country and has become one of the major pests in the cotton area around the country. It is also one of the main factors affecting cotton yield and quality. Hazard characteristics. Cotton aphid host a lot, according to reports, a total of 74 families of 285 host plants in the cotton area in China in the summer hosts cotton, melon, Asteraceae, jute, kenaf, Solanaceae and amaranth plants. Overwintering host Hibiscus, pepper, pomegranate and other woody plants and summer solstice, Viola, bitter gourd and other herbs. Aphis gossypii and aphid clustered on the leaf back and tender head sucking juice, the victim leaves curled or shrunk to the back,