草地学报

›› 2002, Vol. 10 ›› Issue (2): 124-127.DOI: 10.11733/j.issn.1007-0435.2002.02.009

• 研究报告 • 上一篇    下一篇

青藏高原不同海拔高度对禾本科牧草体外消化率的影响

徐世晓, 赵新全, 孙平, 赵伟, 赵同标   

  1. 中国科学院西北高原生物研究所, 西宁, 810001
  • 收稿日期:2001-11-08 修回日期:2002-02-07 出版日期:2002-05-15 发布日期:2002-05-15
  • 作者简介:徐世晓(1973- ),男,青海乐都人,硕士,从事生态学方面研究.E-mail:xushixiao@sina.com.cn
  • 基金资助:
    国家基础研究规划项目(G1998040813);国家自然科学基金项目(30070147);中国科学院创新工程项目(KZCX1-09-01)

Altitude Impact on Vitro Digestibility of Gramineous Herbage Grown in Tibetan Plateau

XU Shi-xiao, ZHAO Xin-quan, SUN Ping, ZHAO Wei, ZHAO Tong-biao   

  1. Northwest Plateau Institute of Biology, CAS, Xining, 810001, China
  • Received:2001-11-08 Revised:2002-02-07 Online:2002-05-15 Published:2002-05-15

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摘要： 利用大板山北坡3200m-3800m的海拔梯度,分别在3200m、3400m、3600m和3800m处选取羊茅、一年生早熟禾和(艹洽)草用二级离体培养法测定其体外消化率。1999和2000年测定结果表明,随着海拔的升高,3种牧草的体外消化率呈增加趋势,海拔从3200m升到3800m,羊茅、早熟禾、(艹洽)草的体外消化率分别增加6.42、6.35、8.69和4.89、9.8和5.1个百分点。显著性分析结果表明,供试牧草的体外消化率与其生长的海拔高度之间的正相关关系差异显著(P<0.05)。

关键词: 大板山, 海拔, 羊茅, 早熟禾, 艹洽草, 体外消化率

Abstract: Four sites that depend on different altitudes along northern slop of Daban Mountain were used to investigate the impacts of altitude of sites herbage grow on gramineous herbage vitro digestibility, Every 200m of each site were choosed from 3200m to 3800m.Three species of Tibetan Plateau gramineous herbage, such as Festuca ovina,poa annua,Koeleria cristata,which grown at different altitudes of Daban Mountain were selected to determine vitro digestibility, The results obtanied from the experiment indicate that there are a positive correlation between herbage vitro digestibility and the altitude of sites herbage grow.based on the results of 1999 and 2000 vitro digestibility of Festuca ovina,Poa annua,Koeleria cristata increase 6.42 and 6.35,8.69 and 4.89, 9.8 and 5.1 percent respectively as raise of altutude from 3200m to 3800m.

Key words: Daban Mountain, altitude, Festuca ovina, Poa annua, Koeleria cristata, Vitro digestibility

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