北方棉区棉红铃虫自60年代采用自然低温处理的方法后,受到了明显的控制。近年来由于棉花收获后由各户分散贮存,且多贮存于室内,有利于该虫越冬存活,以致虫量逐年积累。当前在棉田综防中对此虫重视不够,致使其回升为害。1987～1988两年,进行了初步调查,现将结果简报如下,并对防治技术 Northern cotton bollworm has been significantly controlled since natural low-temperature treatments were used in the 1960s. In recent years, due to the scattered storage of cotton by each household and more storage in the room, it is favorable for the pest to survive the winter so that the amount of pests accumulated year by year. At present, there is not enough attention paid to this pest in the cotton field, causing it to pick up. Two years from 1987 to 1988, conducted a preliminary survey, the results are summarized below, and the prevention and treatment technology