从2012年10月份以来,不少农民朋友反应大田秋播蒜苗生长缓慢、矮小、瘦弱,下部叶片黄化、干枯,上部叶片也相继变黄并发生死苗情况。笔者通过实地调查和室内研究发现,蒜苗发生此种情况主要系根螨危害所致。田间取样观察,一般地块蒜苗单株有螨100头左右,严重地块可高达300头以上,严重影响大蒜的产量和质量。据调查,根 Since October 2012, many farmers’ friends responded to the slow growth, shortness and emaciation of the autumn-sown garlic seedlings in the fields. The lower leaves were yellowed, withered and the upper leaves turned yellow one after another and death occurred. The author through field surveys and laboratory studies found that this situation occurs mainly in garlic seedlings caused by root mite hazard. Field sampling observation, the general block of garlic seedlings have about 100 mites, a serious block can be as high as 300 or more, seriously affecting the yield and quality of garlic. According to the survey, root