棉红铃虫是我县棉花的主要害虫之一。根据近11年的资料分析:1964—1968年每年第三代一般发生量较大,为害较重;1969年以后连续三年为害较轻;1972年急剧回升,为害较重;1973年发生量下降,为中等发生年; Cotton bollworm is one of the major pests of cotton in our county. According to the data analysis of the past 11 years: the third generation in 1964-1968 is generally large in amount and detrimental to pests; the damage has been less serious for three consecutive years since 1969; the sharp rise in 1972 has resulted in serious damage; and the decline occurred in 1973 , For the middle of the year;