为确保棉田实现增产增收，冀南棉区防治棉铃虫和枯萎病的具体作法是：一、麦田一代棉铃虫一般不用防治，治麦蚜时兼治即可。为保护麦田天敌资源，防治麦蚜时要选用保益灭害农药抗蚜威（辟蚜雾）、伏杀磷等农药。当每平方米幼虫超过8头以上，可喷施BT制剂200倍液防治．5月底，一 In order to ensure cotton yield increase, cotton fields in southern Hebei prevention and control of cotton bollworm and blight specific practices are: First, the cotton field bollworm generation generally do not have to control, governance wheat aphid and governance can be. In order to protect the resources of natural enemies in wheat fields and prevent and control wheat aphids, it is necessary to choose Baoyi to exterminate pesticides such as pirimicarb (insecticide) and pesticides such as pesticides. When more than 8 per square meter of larvae can spray BT preparation 200 times liquid control. By the end of May, one