Abstract: The comparison between rotation and continous-seasonal grazing was made with crossbred wether on Hays Teaching Ranch of Inner Mongolian Agriculture and Animal Husbandry College where the desert steppe is dominated by stipa breviflora in damao Banner,Inner Mongolia during June,1985-May,1987,for probing a proper grazing system and putting natural pastures to rational use. The results were shown as follows:the coverage of the plant community in the rotation grazing was higher (p<0.05) than that in the continuous-seasonl grazing,herbage quality in the former was better than that in the latter;there was no signifieant(p>0.05) difference on the physical characteristics of the soil between the two systems;the sheep in the rotation grazing spent more re-sting time and less eating and idling time (p<0.05 or 0.01) than that in the continuous-seasonal grazing;the live-weight gain of sheep in the rotation grazing was higher(p<0.01) than that in the continuous-seasonal grazing in the summer-autumn season.

Key words: rotation grazing, continuous-seasonal grazing, desert steppe, Stipa breviflora, crossbred wether

摘要： 本试验于1985年6月至1987年5月在内蒙古农牧学院哈雅教学牧场,选用成年杂种羯羊对短花针茅荒漠草原划区轮牧和季节连牧进行了比较试验,旨在探讨荒漠草原地区适宜的放牧制度,合理利用天然草地。研究结果表明,划区轮牧的草群盖度显著高于季节连牧(P<0.05),牧草质量较季节连牧好;划区轮牧和季节连牧的土壤物理性状没有明显差异(>0.05);划区轮牧的绵羊比季节连牧有较长的休息时间和较短的采食、游走时间(P<0.05或 P<0.01);放牧第三年,划区轮牧的绵羊夏秋增重量显著高于季节连牧(P<0.01)。

关键词: 划区轮牧, 季节连牧, 荒漠草原, 短花针茅, 杂种羯羊