冰草叶螨Tetranychus agropyronus Wang属蜱螨目叶螨科,严重为害玉米。据1979年策勒县固拉哈玛公社6大队180亩早播玉米地调查,螨害严重度3.6级,单株产量损失系数为3.1时,每亩产量损失34.9斤。1980年在策勒县东方红公社20大队调查,武单早受害植株较正常植株少2—3个叶片,矮30—40厘米,空秆率达10％,产量损失15—25％。经笔者于1979 Tetranychus agropyronus Wang is a family of acarina, a spider mite that infects maize. According to the investigation of the 180-mu-early-maturity maize field of the 6th unit of the 6th unit of the Solid Lahama commune in Cele County in 1979, the severity of the mite damage was 3.6 and the yield loss coefficient per plant was 3.1 when the yield loss per mu was 34.9 kg. 1980 in Cele County Dongfanghong commune 20 brigade investigation, Wudi early plant damage 2-3 times less than the normal plant leaves, short 30-40 cm, empty stalk rate of 10%, the yield loss of 15-25%. After the author in 1979