皮山县位于新疆南部 ,是著名的干旱农业区 ,降水稀少 ,大气极端干燥 ,有限的地表水资源限制着皮山县农业生产的发展。改进耕作制度 ,推广粮作地膜覆盖技术 ,扩大冬麦田留行春套玉米的面积 ,使粮食作物由一年二熟改为一年三熟。但伴随而来的问题是玉米螨害更趋严重 (表 1)。该地 Pishan is located in the southern part of Xinjiang. It is a well-known arid agricultural area. Precipitation is rare and the atmosphere is extremely dry. Limited surface water resources limit the development of agricultural production in Pishan County. Improve the farming system, to promote the technology of grain mulching, expand the area of ​​spring corn in the winter wheat field, and change the food crops from two crops a year to three crops a year. However, the attendant problem is the more serious maize mite damage (Table 1). The place