农牧交错带退耕还草对耕作层土壤磷、钾含量的影响

doi:10.11733/j.issn.1007-0435.2003.03.008

›› 2003, Vol. 11 ›› Issue (3): 228-233.DOI: 10.11733/j.issn.1007-0435.2003.03.008

农牧交错带退耕还草对耕作层土壤磷、钾含量的影响

韩永伟, 韩建国, 王堃, 张蕴薇, 康俊梅

中国农业大学草地研究所, 北京, 100094

收稿日期:2002-10-17 修回日期:2003-06-12 出版日期:2003-08-15 发布日期:2003-08-15
作者简介:韩永伟(1973- ),男,内蒙古人,2002年7月于中国农业大学获得博士学位,现在中国环境科学研究院生态所工作,主要从事区域草地生态保护、生物多样性保护和土地退化等方面的研究工作
基金资助:
国家重点基础研究发展规划G2000018606项目资助

Soil Content of Phosphorus and Potassium in the Agro-Pastoral Transitional Zone After Cropland Being transformed into Grassland

HAN Yong-wei, HAN Jian-guo, WANG Kun, ZHANG Yun-wei, KANG Jun-mei

Institute of Grassland Science, China Agricultural University, Beijing 100094, China

Received:2002-10-17 Revised:2003-06-12 Online:2003-08-15 Published:2003-08-15

摘要/Abstract

摘要： 在农牧交错带以小麦为对照,研究退耕还草对土壤磷、钾含量的影响。结果表明,退耕还草后,土壤0～20cm速效磷、钾含量均高于小麦地。冰草和无芒雀麦能较好地提高土壤速效磷和速效钾的含量。老芒麦与无芒雀麦混播(3:1)可以明显提高土壤速效磷含量。无芒雀麦与冰草混播(3:1)可以较好地提高土壤速效钾含量。

关键词: 草原学, 农牧交错带, 退耕还草, 磷含量, 钾含量

Abstract: A study,comparing the soil content of phosphorus and potassium in a plot of grassland that has been transformed from cropland with that of a plot of wheat field in the agro-pastoral transitional zone,reveals that the quick-acting P and K in a soil depth of 0～20 cm of the former are higher than those of the latter of the same soil depth.Land cultivated with wheatgrass and smooth bromegrass could effectively have its soil content of quick-acting P and K enhanced.Mixed sowing of Siberian wildrye and smooth bromegrass(3:1) could raise the soil content of quick-acting phosphorus,while smooth bromegrass and wheatgrass sowed in a ratio of 3:1 could raise the soil content of quick-acting potassium effectively.

Key words: Grassland science, agro-pastoral transitional zone, transforming cropland into grassland, phosphorus content, potassium content

中图分类号:

S812.2

韩永伟, 韩建国, 王堃, 张蕴薇, 康俊梅. 农牧交错带退耕还草对耕作层土壤磷、钾含量的影响[J]. , 2003, 11(3): 228-233.

HAN Yong-wei, HAN Jian-guo, WANG Kun, ZHANG Yun-wei, KANG Jun-mei. Soil Content of Phosphorus and Potassium in the Agro-Pastoral Transitional Zone After Cropland Being transformed into Grassland[J]. , 2003, 11(3): 228-233.

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农牧交错带退耕还草对耕作层土壤磷、钾含量的影响

Soil Content of Phosphorus and Potassium in the Agro-Pastoral Transitional Zone After Cropland Being transformed into Grassland

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