甘肃中部地区的渭源县,属典型的高寒二阴区,平均海拔2200米,年平均气温5.7℃,全年降雨465.2毫米。该县主要粮食作物为春小麦、洋芋,既是高寒阴湿区春小麦辐射基地,又为全省洋芋种薯基地。最近笔者对所抓的“千亩种子工程示范区”小麦种子包衣的增产效果进行了专门调查了解,结果表明: 种子包衣不但能增强小麦抗病虫害能力,田间病虫防治 Weiyuan County in the central region of Gansu, is a typical alpine two shade area, with an average altitude of 2200 meters, the annual average temperature of 5.7 ℃, the annual rainfall of 465.2 mm. The county’s main food crops are spring wheat and potato, which is both a radiation base for spring wheat in the alpine and humid area and a potato base for the whole province. Recently, I conducted a special survey on the yield-increasing effects of the “Seed / Seed Project Demonstration Zone ” of wheat seed coating, and the results showed that seed coating can not only enhance the ability of wheat to resist pests and diseases but also prevent and control pests in the fields