黑线姬鼠(Apodemus agrarius Pullas)是我国东部、东南沿海、长江中下游稻区主要害鼠,亦是欧亚大陆农田优势鼠种。一般鼠密度10～20%,即100鼠夹,捕鼠10～20只,高的达30%以上,为害损失率一般在3～10%,其危害性已超过水稻的主要病虫害,开展防治势在必行,并需要有一个科学合理的防治指标为依据。稻田鼠害防治指标的拟订,涉及面广、影响因素复杂,在国内外研究甚少。为此,我们于1986年开始组织了安吉、桐庐、临 Apodemus agrarius Pullas is the dominant pest in the east, southeast coast and middle and lower reaches of the Yangtze River in China. It is also the dominant species of farmland in Eurasia. The general rat density of 10 to 20%, that is, 100 mouse clips, catching mice 10 to 20, up to 30% or more, the damage loss rate is generally 3 to 10%, its harmfulness has exceeded the major rice pests and diseases, to control the potential In the imperative, and need to have a scientific and rational control indicators as the basis. The formulation of rice field rodent control indicators involves a wide range of factors and complex influencing factors, and few studies have been done at home and abroad. To this end, we started in 1986 Anji, Tonglu, Pro