近年来,棉铃虫在我省棉区的为害显著加重。1972年比1971年发生面积更大,为害持续时间更长,损失程度远远超过红铃虫。列棉铃虫的消长规律过去我省很少研究。因此,迄今尚不能准确掌握虫情,及时防治。为了初步摸清棉铃虫的消长规律,去年在前年的研究基础上继续进行了此虫田间发蛾和产卵消长规律的研究。 In recent years, cotton bollworm in the province of cotton damage significantly worse. The area was larger in 1972 than in 1971, and the duration of the damage was longer and the loss far exceeded that of the red bollworm. Column cotton bollworm growth and decline in the past few studies in our province. Therefore, so far can not accurately grasp the worm, timely prevention and treatment. In order to initially find out the growth and development of cotton bollworm, last year, based on the previous year’s research, we continued the research on the law of the growth and decline of hair moths and spawning in this field.