摘要
通过野外调查和室内分析,研究了高寒草甸坡地"黑土滩"土壤养分分布特征。结果表明,除全磷和速效磷外,其他各养分在不同退化梯度下差异极显著。土壤全氮、全磷、有机质、速效氮、速效磷、速效钾含量随着草地土层的加深呈下降趋势,滩地土壤养分高于坡地,滩地土壤各养分含量分别比坡地增加了37.78%、25%、26.12%、19.16%、22.12%和55.78%。
The purpose of this study was to investigate nutrients characteristics in Alpine Meadow ＂Black soil land＂. The results showed that the content of total N,total P, organic matter available N, available P, available K reduced with the inrease of the depth of soil layer, Their content in sloping land were lower than that in plain land by 37.78%,25%,26.12%, 19.16%,22.12% and 55.78%,respectively. Total P, available P and other kinds of nutrients has the visible diversity in different degree of degradation.
出处
《湖北农业科学》
北大核心
2008年第7期788-791,共4页
Hubei Agricultural Sciences
基金
青海省科技厅公开招标项目(2005-SN-1
3)
关键词
坡地
黑土滩
土壤养分
高寒草甸
sloping field
black soil land
soil nutrients
alpine meadow
