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通过洞庭湖稻区水稻田的害鼠群落和害鼠对水稻损失量的调查，用多元回归方法建立了水稻损失量和害鼠密度的关系模型：Ｙ＝０．０６７４Ｘ１＋０．０３０７Ｘ２－０．１６２７，并计算当地水稻经济允许损失水平Ｌ＝０．１３１７％，据此可确定稻田害鼠复合防治指标，并算出单种害鼠的防治指标（夹夜捕获率）：东方田鼠为４．３７％，黑线姬鼠为９．５９％
Through the multiple regression method, the relationship model between the loss of rice and the density of pest rats was established through the investigation of the pest community and pest damage of paddy rice in paddy rice fields in Dongting Lake: Y = 0.0674X1 + 0.0307X2-0.1627, And calculate the allowable loss level of the local rice economy L = 0.1317%, so as to determine the compound prevention and control index of the pest rats in the paddy field and calculate the prevention and control index (catching the night catch rate) of the single pest mouse: 4.37% Apodemus black line was 9.59%