本文研究了蓟马在我国苜蓿主要产区的分布和危害,以及呼和浩特地区危害苜蓿的蓟马种类组成和生长发育特点。指出蓟马危害可造成苜蓿产量大幅度下降,草质严重变劣。介绍了防治蓟马的农药筛选试验结果,强调培育抗虫品种是防止蓟马危害的根本措施。 This paper studied the distribution and damage of thrips in the main alfalfa producing areas in China, as well as the species composition and the growth and development characteristics of the thrips which are harmful to alfalfa in Hohhot. Pointed out that thrips harm can cause alfalfa yield dropped significantly deteriorated grass quality. The results of pesticide screening tests on thrips are introduced. It is emphasized that the cultivation of insect-resistant varieties is the fundamental measure to prevent the harm of thrips.