棉红铃虫的防治不但要根据蛾量,更重要的是应考虑棉株发育时期。如果红铃虫蛾量达到防治标准,但敏感青铃很少或不存在,那么防治时期应推迟;若敏感青铃很多,即使蛾量少也应进行防治,这是因为造成损失最大的是14—21天铃期的敏感青铃。因此,不管早、中、迟棉田,在结铃率达80% Cotton bollworm prevention and treatment not only based on the amount of moth, more importantly, should consider the cotton plant development period. If the amount of red bollworm moths to prevent and control the standard, but little or no sensitive blue bell, then the control period should be postponed; if a lot of sensitive bell, even if the amount of moths should also be prevention and control, which is the greatest loss of 14 -21 days bell sensitive green bell. Therefore, regardless of early, middle and late cotton fields, in the bell rate of 80%