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几年来,我们在利用赤眼蜂防治害虫方面,取得了一些成果。为了进一步探索赤眼蜂的发生规律、扩大虫源和提高寄生率,我们遵照毛主席关于“人类总得不断地总结经验,有所发现,有所发明,有所创造,有所前进”的伟大教导,从1972年冬开始对赤眼蜂的自然越冬情况,进行了调查研究,现将初步结果简报于下。 一、调查经过及结果 1972年10月,我们开始寻找赤眼蜂的越冬场所和寄主,从田野到村庄,沟沿到坟塘,查遍树木和杂草,搜集到数以千计的标本,于11月下旬,在柳毒蛾卵的
In recent years, we have made some achievements in the use of Trichogramma against pests. In order to further explore the law of Trichogramma, extend the source of insects and increase the parasitism rate, we follow Chairman Mao’s great teachings that “man always has to summarize the experience, discover something, discover something, invent something, and make progress.” , From the beginning of the winter of 1972 on the Trichogramma natural overwintering situation, conducted a survey, the preliminary results are now reported below. I. SURVEY AND RESULTS In October 1972, we began to search for the wintering places and hosts of Trichogramma, from fields to villages, ditches to the graves, and to the search of trees and weeds, collecting thousands of specimens from In late November, in the venomous turtle eggs