Objective To acquire the optimum concentration of Type-C botulin used in killing wild rodent on the grassland in Datong city.

• 目的用浓度分别为0。10%25、0。15%25、0。20%25的C型肉毒毒素对大同市草地害鼠进行杀灭试验,以确定草地灭鼠应用的最佳浓度。