2种放牧制度大针茅草原群落特征及营养物质动态  

THE DYNAMICSS OF COMMUNITY CHARACTERISTICS AND NUTRIENTS ON Stipa grandis STEEPE UNDER TWO GRAZING SYSTEMS

作　　者：王颖杰[1] 卫智军[1] 展春芳[1] 孙世贤[1] 吴艳玲[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010018

出　　处：《内蒙古农业大学学报（自然科学版）》2012年第3期88-93,共6页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：内蒙古科技创新引导奖励资金项目"蒙古退化植被恢复技术和定向经济型植物产业化种植基地建设与示范(20082002)"资助

摘　　要：为提供家庭牧场合理经营的依据,在锡林浩特市大针茅草原进行两种放牧制度的比较试验。试验第二年的结果表明:划区轮牧提高了大针茅、羊草和糙隐子草的高度、盖度和密度。轮牧区优势种群的高度、盖度、密度均有高于自由放牧区的趋势。大针茅、羊草和糙隐子草重要值、地上现存量及总地上生物量轮牧区高于自由放牧区。轮牧区粗灰分含量总体上低于自由放牧区。试验中期轮牧区粗脂肪含量和粗纤维含量高于自由放牧区,粗蛋白含量自由放牧区高于轮牧区。For rational management to family ranch,comparing trail on rotational grazing system（RG） and continuous grazing（CG） was performed on Stipa grandis steppe in Xilinhot.The results in the second year were as follows： The rotational system increase the height,coverage and density of Stipa grandis,Leymus chinensis and Cleistogenes aquarrosa.There was a trend that the height,coverage and density of dominant population in rotational area were higher than those in continuous area.The important values and the above-ground standing crop of Stipa grandis,Leymus chinensis,Cleistogenes aquarrosa and community above-ground standing crop in rotational area were higher than those in continuous area.The crude ash content of rotation grazing is generally lower than continuous area.In the middle of test,the crude fat content and crude fiber content of rotational area were higher than continuous area,but the content of crude protein in continuous area was higher than that in rotational area.

关 键 词：放牧制度 大针茅草原 群落特征 营养物质 

分 类 号：S812.29[农业科学—草业科学]