棉铃虫Heliothis armigera(Hubner)为害花生,国内早有报道。但是,近两年来棉铃虫在我县花生集中产区,连续猖獗发生为害。我县辰时、辛村和北溪村三个公社毗邻,1979年花生面积达18,730亩,1980年又增至23,000多亩,而这三个公社的棉田总共只有一千来亩。在棉铃虫种群数量发展的形势下,这样一个特定的生态环境,导致了棉铃虫连续两年在花生田暴发为害,一般每平方米虫量多在10—30头之间,严重的高达96头,给花生安全生产带来了较大威胁。 一、为害情况 1.根据初步观察,棉铃虫蛾子白天藏匿在 Heliothis armigera (Hubner) harm peanut, has long been reported in China. However, in the past two years, cotton bollworm peanut-producing areas in my county, continuous rampant damage. At the time of our county, the communes of Xincun and Beixi were bordered. In 1979, the peanut area was 18,730 mu, increased to 23,000 mu in 1980 and the total amount of cotton fields in the communes was only 1,000 mu. Under the situation of the population development of cotton bollworm, such a specific ecological environment led to two consecutive years of cotton bollworm outbreaks in peanut fields. Generally, the number of insect pests per square meter was between 10-30 and the number of serious ones was 96 , Peanut safety has brought a greater threat. First, the damage situation 1. According to preliminary observations, bollworm moths hide in the daytime