不同放牧制度对亚高山草甸土理化性质的影响  

Effects of different grazing systems on soil physical and chemical properties in subalpine meadow soil

作　　者：武红旗[1] 范燕敏[1] 孙宗玖[1] 

机构地区：[1]新疆农业大学草业与环境科学学院/新疆草地资源与生态重点实验室,新疆乌鲁木齐830052

出　　处：《草原与草坪》2011年第4期30-34,共5页Grassland and Turf

基　　金：全球环境基金(GEF)赠款项目"新疆典型草原合理放牧制度的建立"资助

摘　　要：以新疆亚高山草甸土为研究对象,研究了自由放牧和划区轮牧对土壤理化性质的影响。结果表明:短期改变放牧制度对草地土壤养分含量影响不显著,理化性质对其响应程度亦有所不同。轮牧土壤碱解氮、有机质的含量稍低于自由放牧,土壤速效钾和有效磷的含量均高于自由放牧。不同放牧制度对草地土壤容重、孔隙度、机械组成的影响不大。The effects of different grazing systems, including continuous grazing and rotational grazing, on soil physical and chemical properties of subalpine meadow soil were studied in the paper, based on grazing experiments in Nalati of Xinyuan Country, Xinjiang. The results showed that there was no significant effect on the soil nutrients for the short-term change of the grazing system, but the responses of soil physicochemical properties to the grazing system were still different. Compared with the continuous grazing, the contents of organic matter and available nitrogen were lower, but the contents of available potassium and available phosphate were higher in the rotational grazing system. The effects of different grazing systems on the soil bulk density, porosity and soil mechanical composition were slight.

关 键 词：亚高山草甸土 理化性质 自由放牧 划区轮牧 

分 类 号：S812[农业科学—草业科学]