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１９９７～１９９８年春秋两季于河北省青龙县用杀铃脲、除虫脲和灭幼脲３号大面积地面低量喷雾防治赤松毛虫Ｄｅｎｄｒｏｌｉｍｕｓｓｐｅｃｔａｂｉｌｉｓ总面积达１６６６ｈｍ２，防治后平均虫口减退率达９５％，有效并持续地控制了松毛虫的危害。防治对林分内的有益生物种群无不良影响。
From 1997 to 1998, the total area of Dendrolimuspectabilis was 1666 hm2 in the autumn and autumn in Qinglong County, Hebei Province, and the average area of Dendrolimuspectabilis was 1666hm2. The average reduction rate of the population was 95% , Effectively and continuously control the damage of pine caterpillars. Control has no adverse effect on the beneficial organisms in the stands.