从1987年6月到1990年5月在四川省德阳市农村设置了4个试验区,即不防治区(A区,对照);秋季防治区(B区);春季防治区(C区)和不定期防治区(D区)。各区均位于成都平原,生态条件,气温年降水量、日照、鼠种类别、作物种类和布局等条件基本相同。每试验区面积10公顷,连续3年逐月进行鼠情监测。每月每区布一号铁质鼠夹300夹夜,记载鼠种、数量、性别、年龄、怀孕生殖状况、胃容 From June 1987 to May 1990, four pilot areas were set up in the countryside of Deyang City, Sichuan Province, namely, no control area (area A, control), autumn prevention area (area B), spring prevention area (area C) and Occasional control area (D area). The districts are all located in the Chengdu Plain. The conditions of ecological conditions, annual precipitation, sunshine, rat species, crop types and layout are basically the same. Each experimental area of ​​10 hectares, for three consecutive months for mouse monitoring. Each district a cloth iron clip on the 1st night 300 folder, record rat species, number, sex, age, pregnancy reproductive status, stomach capacity