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对1984—2015年贵州省岑巩县、息烽县、关岭县农田大足鼠种群生态特征资料分析表明,雌、雄鼠体重、体长等形态特征均无显著性差异。大足鼠在稻田区、旱地耕作区占总鼠数的1.19%,为农田常见鼠种之一。种群数量较低,平均捕获率为0.035%,每年在6—7月和10—11月出现两个种群数量高峰。夏季和秋季种群数量明显高于春季和冬季。种群总性比为0.92,平均怀孕率10.53%,平均胎仔数7.17只,平均睾丸下降率41.94%,平均繁殖指数0.36。主要繁殖期在4—9月。春季和夏季是农田大足鼠种群繁殖力较强的季节。平均肥满度为3.27 g/cm3,不同性别、生境、年龄、季节之间肥满度差异均不显著。
From 1984 to 2015, the data of ecological characteristics of farmland daced rats in Cengong County, Xifeng County and Guanling County in Guizhou Province showed that there was no significant difference in body shape and body length among female and male rats. Dazu rats in paddy fields, dry farming area accounted for 1.19% of the total number of rats, one of the common farm species. The population is low, with an average capture rate of 0.035%, with two peak populations occurring in June-July and October-November each year. The number of summer and autumn populations was significantly higher than that of spring and winter. The total population ratio was 0.92, the average pregnancy rate was 10.53%, the average number of litter size was 7.17, the average testicular descent rate was 41.94% and the average reproductive index was 0.36. The main breeding season in April-September. Spring and summer are the strong breeding season for farmland dwarfing rats. The average fatness was 3.27 g / cm3, and there was no significant difference in fatness between different sexes, habitats, ages and seasons.