荒漠草原不同放牧制度对土壤理化性质的影响  

The Influence of Different Grazing Systems on Soil Physical and Chemical Properties in Desert Steppe

作　　者：卫智军[1] 乌日图[1] 达布希拉图[1] 苏吉安[1] 杨尚明[1] 

机构地区：[1]内蒙古农业大学,内蒙古呼和浩特010019

出　　处：《中国草地》2005年第5期6-10,共5页Grassland of China

基　　金：农业部草地资源生态重点开放实验室和内蒙古"十五"重点攻关项目(20010607)资助

摘　　要：在短花针茅荒漠草原对比研究了划区轮牧和自由放牧两种放牧制度对草地土壤理化性状的影响。结果表明:划区轮牧与自由放牧相比,表层土壤容重下降、孔隙度增加、土壤机械组成优化;划区轮牧表层土壤质地有所改善;土壤中全氮、碱解氮、全磷、速效磷、速效钾以及有机质含量均较自由放牧区有所提高。The comparative studies on the influence of rotational grazing and continuous grazing on the physical and chemical characters of soil was conducted in desert steppe of Stipa breviflora. The results showed that the soil bulk descended and the soil porosity of surface layer increased under the rotational grazing compared with that under continuous grazing. The mechanical components and surface layer texture of the soil under rotational grazing were apparently improved. Total N, total P, available P, available K, alkaline hydrolyzed nitrogen and organic matter contents were apparently increased in the soil under rotational grazing.

关 键 词：荒漠草原 划区轮牧 自由放牧 放牧制度 

分 类 号：S812.2[农业科学—草业科学]