中文摘要：

建立短效不育剂控制下害鼠种群的动态模型,模型中害鼠分为成体和幼体,不育控制只对成体起作用.对模型的性态以及不育率、恢复率等参数对种群发展的影响进行分析.结果表明：较高的不育率会达到更好的控制效果,使种群规模较小,甚至灭绝;不育剂的短效性限制了不育剂在控制害鼠上的作用,也限制了控制的效果;不育控制不改变种群的稳定年龄分布.

英文摘要：

Dynamics models of rodent pest population are formulated in which rodent pest pass through juvenile stage and adult stage,and the short-acting sterilant acts on adult individuals only.Model behavior and effects of contraception rate,recover rate etc on population dynamics are analyzed.Larger contraception rate implies better control effect,the controlled population is smaller,even dies out.Short-acting of sterilants limits their effect.Contraception control does not change the stable age distribution of population.