Effect of Cutting on the Growth Capability of Leymus chinensis Grassland

doi:10.11733/j.issn.1007-0435.2007.03.013

›› 2007, Vol. 15 ›› Issue (3): 263-268.DOI: 10.11733/j.issn.1007-0435.2007.03.013

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Effect of Cutting on the Growth Capability of Leymus chinensis Grassland

WANG Guo-liang, LI Xiang-lin, WAN Li-qiang, HE Feng, WANG Hu

Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing 100094, China

Received:2006-11-30 Revised:2007-03-13 Online:2007-06-15 Published:2007-06-15

刈割对羊草草原生长性能的影响

王国良, 李向林, 万里强, 何峰, 王琥

中国农业科学院北京畜牧兽医研究所, 北京, 100094

通讯作者: 李向林,E-mail:lixl@iascaas.net.cn
作者简介:王国良(1977- ),男,山东汶上人,博士研究生,研究方向为草地生态与草地资源管理,E-mail:wangguoliang@126.com
基金资助:
国家科技攻关项目(2004BA528B-1-4);国家科技支撑计划项目(2006BAD16B05)资助

Abstract

Abstract: An experiment was carried out to study the effect of cutting intensity on the growth capability of Leymus chinensis(Trin.) Tzvel. and the vegetative community on L.chinensis grassland.The results showed that the aboveground standing biomass of both vegetative community and L.chinensis decreased along with the increased cutting intensity.Treatments resulted in the similar changes in regrowth biomass and regrowth rate with one-peak dynamics.The response of regrowth rate of community and L.chinensis to cutting height followed the conic format.The relative regrowth rates of community and L.chinensis under different treatments had no significant differences.Based on the analysis of the relationship between regrowth rate and cutting height,the optimum cutting height was at 15 centimeter.

Key words: Leymus chinensis grassland, Community, Cutting intensity, Cutting height, Growth capability

摘要： 研究刈割强度对羊草草原生长性能的影响。结果表明:随着刈割强度的增大,地上现存量呈连续下降趋势,群落和羊草变化趋势相同;处理间生长量和生长速率均呈单峰型变化;生长速率对留茬高度的响应为二次曲线形式;相对生长速率在处理间差异不显著;本文参照生长速率的二次曲线形式,以留茬15 cm(D 1)作为刈割强度的参数。

关键词: 羊草草原, 群落, 刈割强度, 留茬高度, 生长性能

CLC Number:

S812

WANG Guo-liang, LI Xiang-lin, WAN Li-qiang, HE Feng, WANG Hu. Effect of Cutting on the Growth Capability of Leymus chinensis Grassland[J]. , 2007, 15(3): 263-268.

王国良, 李向林, 万里强, 何峰, 王琥. 刈割对羊草草原生长性能的影响[J]. , 2007, 15(3): 263-268.

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Effect of Cutting on the Growth Capability of Leymus chinensis Grassland

刈割对羊草草原生长性能的影响

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