棉蚜对棉苗的危害往往导至棉花发育迟缓以致影响产量。尤其是半干旱的特早熟棉区,这一问题更为严重。为此,做好早期棉蚜的防治工作十分重要。了解掌握棉蚜的迁移规律是作好早期棉蚜的发生预报与防治的关键。一、棉蚜的迁移棉蚜是一种转主寄生的害虫,以卵在夏至草、鼠李及寄主上越冬,第二年早春孵化成干 The harm of cotton aphids to cotton seedlings often leads to stunted cotton and thus affect the yield. This problem is even more serious, especially in the semi-arid precocious cotton area. To this end, early cotton aphid prevention and control work is very important. Understanding the migration of cotton aphids is the key to forecasting and controlling early occurrence of cotton aphids. A cotton aphid migration Aphis gossypii is a parasitic insect pests, the eggs in the summer solstice grass, walnuts and host winter, the second year of early spring hatch into dry