水、肥添加对内蒙古典型草原土壤碳、氮、磷及pH的影响

被引：49

作者：

魏金明 ^{[1
,2
]}

姜勇 ^{[1
]}

符明明 ^{[1
,2
]}

张玉革 ^{[3
]}

徐柱文 ^{[1
]}

机构：

[1] 森林与土壤生态国家重点实验室中国科学院沈阳应用生态研究所

[2] 中国科学院研究生院

[3] 沈阳大学生物与环境工程学院

来源：

生态学杂志 | 2011年 / 30卷 / 08期

关键词：

增水; 氮肥; 磷肥; 草地; 土壤性质;

D O I：

10.13292/j.1000-4890.2011.0245

中图分类号：

S812.2 [草原土壤学];

学科分类号：

0713 ;

摘要：

采用野外田间实验和室内分析相结合的方法,研究了水分、氮肥和磷肥添加对内蒙古典型草原土壤碳、氮、磷含量及pH的影响。结果表明:土壤有机碳和全氮含量对水、肥添加无显著响应;水分添加降低了土壤铵态氮(31.1%,P<0.01)和硝态氮(7.9%,P<0.001)含量,而添加氮肥显著增加了土壤铵态氮和硝态氮的含量(P<0.001);添加磷肥显著增加了土壤全磷和速效磷含量,分别为不施磷肥的1.7和5.9倍(P<0.001);水分添加提高了土壤pH值,氮、磷肥的添加均不同程度地降低了土壤pH值(P<0.001)。表明:水分以及氮肥、磷肥的添加对内蒙古典型草原土壤的性质具有明显的调节作用,这将为退化草地的管理提供科学参考。

引用

页码：1642 / 1646

页数：5

共 33 条

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