我县近年来松林遭到赤松毛虫的危害较重。为了有效的防治,近两年来利用春蚕繁育赤眼蜂防治亦松毛虫取得了较好的效果。现将结果整理如下: 一、春蚕和赤松毛虫生活史差异与分析据观察,春蚕于6月下旬至7月上旬作茧化蛹,7月上旬出现成虫,7月中旬为羽化盛期。赤松毛虫于7月上旬开始作茧化蛹,7月 In recent years, my county pine forest was severely damaged. In order to effectively prevent and control, the use of spring silkworm breeding Trichogramma prevention and control also achieved good results in the past two years. The results are summarized as follows: First, the difference between life history of silkworm and red cedar caterpillar and analysis According to the observation, the spring silkworm cocoon pupation in late June to early July, adult in early July, mid-July emergence period. Dendrolimus cocoon pupation started in early July, July