【摘要】 <正> 灰仓鼠(Cricetulus migratorius Pallas)和小家鼠(Mus musculus Linnaeus)在新疆北部农区田野众害鼠中种群数量居第二和第一位(新疆鼠害研究组,1975a,b;李春秋,1981),其数量消长有何规律?特点如何?两者同栖于农田,相互关系如何?有否促进或制约作用?这对鼠害防治工作颇具理论及实践意义。国内梁杰荣等(1978)报道了青海草原主要害鼠中华鼢鼠(Myospalax fontanieri)和达乌里鼠兔(Ochotona daurica)种群更多还原

【Abstract】 The seasonal population fluctuations in gray hamster show that the peak density occurs in June-October, but the heighest density in house mouse is in October.Multi-yearly population dynamics of gray hamster are smaller than that of house mouse. 3 litters are born in gray hamster throughout a year, while in house mouse 9 .39 litters are born in a year.Therefore, gray hamster population cann’t lead to larger dan-age than house mouse.In addition, the heighest population density of gray hamster can be predicted by the following two regressions equations:where X represents the capture rates in house mouse in April,where X represents the capture rates in gray hamster in April,更多还原