根据内蒙、甘肃、河北、安徽、湖北等省的重点调查及有关材料证明,鼠类普遍分布于我国广大地区的农田和草原,种类多,为害严重,沙土鼠、鼢鼠、黄鼠、鸣声鼠、早獭、仓鼠等是西北、东北、华北等地农作物及牧草的大害;褐家鼠、黑家鼠、水鼠、田鼠等在江南各省为害严重;松鼠、金花鼠等为害山林地区的农作物及果树生产,损失是严重的。1957年甘 According to the key surveys and related materials in Inner Mongolia, Gansu, Hebei, Anhui and Hubei provinces, it has been proved that rodents are widely distributed in farmland and grassland in vast areas of our country. There are many types of rodents that are seriously devastated. Gerbils, zokor, Rattus norvegicus, hamster, hamster, rat, squirrel and hamster are the major crops and pastures in northwest, northeast and north China. Rattus norvegicus, Of the crops and fruit trees, the loss is serious. 1957 Gan