濒危植物翅果油树集中分布区土壤养分特征及差异分析  

Study on Soil Fertility Properties and Difference in the Distribution Area of the Endangered Elaeagnus Mollis Diels

作　　者：武银玉[1] 杜贞[1] 武丽君[1] 闫桂琴[1] 

机构地区：[1]山西师范大学生命科学学院,山西临汾041000

出　　处：《山西师范大学学报（自然科学版）》2009年第4期74-78,共5页Journal of Shanxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(30470296);山西省自然科学基金(20031090)

摘　　要：翅果油树(Elaeagnus mollis)属胡颓子科,胡颓子属,国家二级濒危保护植物,我国特有树种.本文针对山西翼城、乡宁、平陆翅果油树三个集中分布区土壤的pH值、有机质、全氮、碱解氮、全磷、有效磷和全钾、速效钾含量进行了检测分析,旨在探讨翅果油树分布区的土壤特性.结果表明,其pH值的平均值为7.923,碱性土壤;有机质,氮素,磷素含量中等偏低,表层土大于底层土,钾素含量丰富.翼城分布区有机质与氮素、磷素含量都明显高于其它两个分布区;从相关分析来看,除全钾外各养分含量均与有机质呈显著相关,氮素和钾素对翅果油树的生长起关键作用.Elaeagnus mollis, a rare, endangered and protected species is a plant of monotypic and endemicgenus in China. In this paper, we deal with the pH, organic manure, total N, available N, total P, available P, total K, available K in three soil samples from the distributed area of Elaeagnus rnoUis. The results show that changes in its pH value ranges between 7. 352 - 8. 167, with a mean of 7. 923, alkaline soil; organic matter, the content of N, P were medium low and higher in topsoil than that in down- soil, rich in potassium content. Yicheng populations of organic matter and nitrogen, phosphorus content are significantly higher than the other two populations; from the relevant analysis, with the exception of K-wide outside the nutrients and organic matter content was significantly correlated, N and K play a critical role in the growth for the Elaeagnus moUis.

关 键 词：翅果油树分布区 土壤养分 相关分析 

分 类 号：Q948.113[生物学—植物学]