利用赤眼蜂防治松毛虫在我场已试用多年。实践证明,赤眼蜂对降低虫口密度,控制虫灾蔓延都有较好的效果,而且还能克服化学防治带来的一些弊病,具有一定发展前途。现将我场几年来试用赤眼蜂防治松毛虫的情况整理如下。一、赤眼蜂的生物学特性赤眼蜂是多种卵寄生蜂,在自然界中,寄主多,繁殖力强,周期短,属于完全变态。发病起点温度为5℃,发育一世代需有效积温为235日度左右。 The use of trichogramma control pine caterpillars in my field has been tested for many years. Practice has proved Trichogramma reduce insect population density, control of insect epidemic have a good effect, but also to overcome some of the shortcomings of chemical control, has a certain development prospects. Now my field try trichosanthes Trichomonas trial for several years the situation is as follows. First, the biological characteristics of Trichogramma Trichogramma is a variety of egg parasitic wasps, in nature, the host and more fertility, short cycle, are completely metamorphosed. The onset temperature of 5 ℃, the development of a generation of effective accumulated temperature of 235 days or so.