Abstract: The samples are set on the investigation of the behavior storage and selection offorages of Brandt’s vole on grassland in southern Xilinguole, Inner Mongolia.The result shown:(1) It has a fair steady "food terriotory" during storage period, about 400~1200m² for everygroup habitated in a burrow system of the voles; (2) Average 16.8 i l.53kg could be stored in aburrow system, that means 792.5 ±32.7g/vole which only have been had 58-7 days.As over8o% voles could be dead in winter and left 1/4~ 1/3 forage in soil to next spring.(3) Only 3 or 4 plants are stored, index of preference (PI)is 5.76; (4) At low temperature (-10~-15℃),the rate of death is lower evidently feeding Artemisia frhada than feeding of grasses.The storedbehavior had harmful for animal production.

Key words: Brandt’s vole (Microtus brandti), Stored grass, Overwinter

摘要： 对典型草原布氏田鼠的储草行为和储草种类的选择性研究结果表明:(1)储草期间各洞系鼠群具有比较稳定的采集“领域”,其范围约400～1200m²;(2)平均每个洞系储草16.8±1.53kg(10.25～19.6kg),即每只鼠平均储草792.5±32.7g,储草仅可供其存活58.7天。由于该鼠在越冬期间的自然死亡率在80%以上(试验期间为83.5%)。故而仍有1/3～1/4的储草残留至翌年春季,在地下霉烂后进入土壤。(3)该地区被传的牧草种类仅3～4种。其中冷蒿的重量占总储量94%以上,选择性指数(PI)达5.67。(4)在低温条件下,饲喂冷蒿的鼠,其死亡;率明显低于饲喂禾草组。田鼠的储草对畜牧业生产,尤其是对绵羊抓膘将造成一定危害。

关键词: 布氏田鼠, 储草, 越冬