我们知道早治棉蚜便可防止大批蔓延成灾。试验证明,棉蚜是由棉蚜的越冬寄主上迁入大田的。为了了解棉蚜在棉田中的发生与扩散,首先须了解有翅蚜的发生周期和无翅蚜的扩散作用以及主要环境因素的影响。一有翅蚜的发生有翅蚜的发生是棉蚜由越冬寄主迁至棉田的主要 We know that early treatment of cotton aphid can prevent the spread of a large number of disaster. Tests show that the cotton aphid by the winter aphid host moved into the field. In order to understand the occurrence and spread of cotton aphid in cotton fields, we must first understand the occurrence of aphids and the spread of non-winged aphids and the impact of major environmental factors. The occurrence of a winged aphid with winged aphids is the main shift of cotton aphid from wintering host to cotton field