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通过对太谷地区夏播大豆田截形叶螨的田间为害及发生规律进行观察研究，结果表明：在太谷地区截形叶螨从夏播大豆幼苗期即开始为害，７月下旬达到为害高峰，为害盛期持续１个月之久。同时表明，截形叶螨不同虫态虫口密度的最大叶区不同，其中成虫、卵主要分布在植株的中上部叶片上，幼虫、若虫主要分布在植株的中下部叶片上。
The field damage and the occurrence regularity of Tetranychus urticae on summer sowing soybean in Taigu area were observed and studied. The results showed that the Tetranychus urticae in the Taigu area started to damage from the summer sowing soybean seedling stage and reached the peak in late July, Damage peak duration of 1 month long. At the same time, the maximum leaf area of mouth density of different insect states was different. The adults and eggs were mainly distributed in the middle and upper leaves of the plant. Larvae and nymphs were mainly distributed in the middle and lower leaves of the plant.