黑土区坡耕地土壤酶活性与土壤养分关系研究  

Relationship between soil enzyme activities and soil nutrient of a sloping farmland in the black soil region

作　　者：张孝存[1,2] 郑粉莉[3,4] 安娟[4] 杨维鸽[4] 

机构地区：[1]陕西师范大学旅游与环境学院,西安710062 [2]商洛学院城乡发展与管理工程系,商洛726000 [3]西北农林科技大学资源环境学院,杨陵712100 [4]中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,杨陵712100

出　　处：《干旱区资源与环境》2013年第11期106-110,共5页Journal of Arid Land Resources and Environment

基　　金：国家自然基金项目(40871137);陕西省教育厅科研专项计划(2009JK423)资助

摘　　要：对东北黑土区东山沟坡耕地土壤有机质、全氮、碱解氮、速效磷和土壤转化酶、脲酶、碱性磷酸酶活性进行了测定,并对其结果做相关分析,表明土壤酶可以作为评价黑土土壤肥力的指标,有机质仍是黑土土壤养分和酶活性的源和库。黑土区坡耕地土壤表层养分含量和酶活性高于次表层的相应指标,且呈现显著性差异。据此,建议黑土区坡耕地积极探索和推广秸秆还田、免耕等水土保持新措施,提高有机质含量,以遏制土壤表层质量退化。Soil organic matter,total nitrogen,available nitrogen,available phosphorus and converting enzyme,urease,alkaline phosphates’ activity were measured in sloping farmland in Dongshan watershed belonging to the northeast black soil area.The relationship between them was analyzed by correlation analysis.The results showed that soil enzyme activities could be as a comprehensive index of soil fertility.Soil organic matter was still the source and library of soil enzyme activities and nutrients.The nutrient content and the enzyme activity of the soil surface were higher than that of the subsurface.Moreover,they showed significant differences.Accordingly,It is a good measure of exploring and prompting the straw and no-till and other soil and water conservation methods to improve soil organic matter content and curb the degradation of the surface soil quality.

关 键 词：土壤酶活性 土壤养分 相关性 坡耕地 黑土 

分 类 号：S152.4[农业科学—土壤学]