关键词: 褐家鼠, 种群, 繁殖规律

Abstract: This article gives a systematic study of the propagating law of Rattus norvegicus family. The result shows:that Rattus norvegicus can propagate all the year; for each adult female the average pregnancy times are as many as 9.96 each year,and each time an average of 6.94 baby Rattus norvegicus are borne;the surviving rate for the young in autumn is the highest(64.6%), and the lowest in winter(32.5%), with sharply difference during the four seasons.(F=4.199,P<0.05)The peak pregnancy rate is in March to September,and it is obvious positively correlated with the average temprature and rainfall.(r_temprature=0.783,p<0.01,r_tainfall=0.921,P<0.01) It also has some relationship with such factors as plant changing,crops riping and the number of natural enemies.