云杉线小卷蛾Zeiraphera canadensis Mutuura & Freeman在渭源、漳县、岷县等地针叶林内大面积发生,我省祁连山林区也有发生。受害树种主要为云杉。为了掌握其林间分布规律、主要生活习性及活动规律,更好地开展虫情测报和防治工作,我们于1985年至1987年对渭源县会川林场索爷林地进行了调查。一、调查地概况索爷有林地面积为5324亩,其中天然林2800亩,人工林2524亩,优势树种为云杉,其次是落叶松和少量冷杉。林分以幼、 Zeiraphera canadensis Mutuura & Freeman occurred in a large area in the coniferous forest of Weiyuan, Zhangxian, Minxian and other places, and the Qilian Mountains forest area in our province also occurred. The victim trees are mainly spruce. In order to master its distribution law, main living habits and activity rules, and better carry out insect detection and prevention and control work, we conducted a survey of the Soleplace Forest in Huichuan County, Weiyuan County from 1985 to 1987. First, the survey site Overview Soo has a forest area of ​​5324 acres, of which 2800 acres of natural forests, 2524 acres of plantations, the dominant species of spruce, followed by larch and a small amount of fir. Stands to young,