草地学报

›› 2002, Vol. 10 ›› Issue (2): 100-105.DOI: 10.11733/j.issn.1007-0435.2002.02.005

• 研究报告 • 上一篇    下一篇

农牧交错带退耕还草对土壤物理性状的影响

韩永伟, 韩建国, 张蕴薇   

  1. 中国农业大学草地研究所, 北京, 100094
  • 收稿日期:2001-09-27 修回日期:2001-11-08 出版日期:2002-05-15 发布日期:2002-05-15
  • 作者简介:韩永伟(1973- ),男,硕士毕业于内蒙古农业大学,现为中国农业大学草地所在读博士研究生
  • 基金资助:
    国家重点基础研究发展规划G20000018606项目资助

Effects on Soil Physical Properties of Forages and Crops in the Agro-pastoral Transitional Zone of North China

HAN Yong-wei, HAN Jian-guo, ZHANG Yun-wei   

  1. Institute of Grassland Science, China Agricultural University, Beijing, 100094, China
  • Received:2001-09-27 Revised:2001-11-08 Online:2002-05-15 Published:2002-05-15

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摘要： 农牧研究交错带地区退耕还草对土壤物理性状的影响。结果表明,与小麦比较牧草对土壤容重、含水量、孔隙度和团聚体等土壤物理性状的改善作用非常明显。0-20cm土层,单播草地以冰草土壤容重最小,孔隙度和>0.25mm团聚体总数最大,而混播草地则以无芒雀草+冰草的土壤容重最小,而孔隙度和含水量最大。

关键词: 土壤, 物理性状, 退耕还草

Abstract: The research was about the effects on soil physical properties of forages and crops in the agro pastoral transitional zone of North China.The result were:the profitable effects of forages on soil physical properties such as soil bulk density, water content, total porosity and total number of >0.25mm aggregates are greater than those of wheat.In the 0-20cm soil layer, the solely sowing pasture which has the smallest soil bulk density, the biggest soil total porosity and total number of >0.25mm aggregates is wheatgrass pasture.The mixed sowing pasture with smooth bromegrass+wheatgrass has the smallest soil bulk density and the biggest total porosity and water content in all kinds of mixed sowing pastures.

Key words: Soil, Physical properties, Forages and crops

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