近年来,落叶松尺蠖虫害在乌兰察布市各大林场多发。为有效控制落叶松尺蠖的发生与危害,乌兰察布市森防部门高度重视,积极组织技术人员深入各林场,加强监测,科学研究,实时防治。2014年,全市落叶松尺蠖发生面积2.25万亩,其中重度发生面积0.62万亩,虫口密度为每株3862~4327头,虫株率100%。6月中旬,森防部门投入130多人(次),在气压 In recent years, Larix gmelini pests in Wulanchabu major forest farm. In order to effectively control the occurrence and damage of larch ruler, the forest protection department of Wulanchabu attaches great importance to actively organize technical personnel to go deep into the forest farms and strengthen monitoring, scientific research and real-time prevention and control. In 2014, there were 22,500 hectares of Larix olivaceus in the city, of which 62,000 hectares were seriously affected. The population density was 3862 ~ 4327 per plant and the rate of insect strains was 100%. In mid-June, the defense sector invested more than 130 people (times), under pressure