| 农牧交错带退耕还草对土壤物理性状的影响 |
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| 引用本文： | 韩永伟,韩建国,张蕴薇.农牧交错带退耕还草对土壤物理性状的影响[J].草地学报,2002,10(2):100-105. |
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| 作者姓名： | 韩永伟 韩建国 张蕴薇 |
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| 作者单位： | 中国农业大学草地研究所, 北京, 100094 |
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| 基金项目： | 国家重点基础研究发展规划 G2 0 0 0 0 0 1860 6项目资助 |
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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。
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| 关 键 词： | 土壤 物理性状 退耕还草 |
| 文章编号： | 1007-0435(2002)02-0100-06 |
| 收稿时间： | 2001-09-27 |
| 修稿时间： | 2001年9月27日 |
Effects on Soil Physical Properties of Forages and Crops in the Agro-pastoral Transitional Zone of North China |
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| HAN Yong wei,HAN Jian guo,ZHANG Yun wei.Effects on Soil Physical Properties of Forages and Crops in the Agro-pastoral Transitional Zone of North China[J].Acta Agrestia Sinica,2002,10(2):100-105. |
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| Authors: | HAN Yong wei HAN Jian guo ZHANG Yun wei |
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| Institution: | Institute of Grassland Science, China Agricultural University, Beijing, 100094, China |
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| 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. |
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| Keywords: | Soil Physical properties Forages and crops |
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