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【目的】研究秋季短期休牧对昭苏草原的影响，探讨适宜的休牧时间。【方法】采用控制放牧试验及野外常规取样技术，对不同时期（9月，10月）短期休牧（30 d）下昭苏草甸草原植被群落特征、多样性、主要种群特征进行测定。【结果】与对照比，休牧后草地植被群落高度、盖度、密度、生物量、Simpson指数、Shannon-wiener多样性指数、Margalef物种丰富度指数均出现不同幅度的增加，且9月休牧仅在生物量上增加显著，而10月休牧均增加显著（P<0.05）；休牧后黄花苜蓿、无芒雀麦、野草莓、委陵菜等适口性好的优良牧草重要值呈现增加，而当前主要优势种草原苔草、亚洲百里香重要值呈下降趋势。【结论】休牧有利于昭苏草甸草原植被的恢复，秋季休牧在10月进行效果较好。
【Objective】 The purpose of this study was to study the effect of short-term grazing in autumn on the Zhaosu steppe and to explore the suitable time of animal husbandry. 【Method】 The characteristics, diversity and main population characteristics of vegetation communities in Zhaosu steppe of Zhaosu steppe in different periods (September and October) were studied by controlled grazing experiment and routine sampling technique. 【Result】 Compared with the control, the vegetation height, cover, density, biomass, Simpson index, Shannon-wiener diversity index and Margalef species richness index of grazing grassland all increased in different degrees compared with the control. (P <0.05). The grazing quality of Medicago sativa, Bromus inermis, Wild strawberry and Potentilla anserine were significant Value present increased, while the current dominant dominant species of Carex grassland, Asia thyme important value showed a downward trend. 【Conclusion】 Hugh grazing is beneficial to the restoration of vegetation in Zhaosu meadow steppe. Hugh grazing in autumn is better in October.