大棚土壤浸提液电导率与盐分关系的研究  

Relationship between Electrical Conductivity and Salt Components of Soil Extract in Plastic Greenhouse

作　　者：袁巧霞[1] 朱端卫[1] 张观长[1] 

机构地区：[1]华中农业大学资源与环境学院

出　　处：《华中农业大学学报》2008年第2期239-242,共4页Journal of Huazhong Agricultural University

基　　金：国家自然科学基金项目(40371064)资助

摘　　要：采集具有次生盐渍化特征的大棚土壤,对土壤浸提液电导率和盐分化学性质进行相关性分析。结果表明,土壤浸提液总盐含量(SSC)、Cl-和Ca2+是影响土壤浸提液电导率的主要因素,NO3-、K+和Na+对土壤浸提液电导率直接效应并不明显,而主要通过其它各化学性质要素的影响产生间接效应,使其与土壤浸提液电导率间仍有较大的相关系数;土壤浸提液离子强度与其电导率亦显著相关,并可表示为I=0.0176EC。Relationship between electrical conductivity and chemical properties with characteristics of soil salt accumulation of soil extract （EC5：1） in plastic greenhouse were sudied. The results indicated that the total soluble salt concentration（SSC） ,Clˉand Ca^2＋ ions were the primary factors of EC2, 1. The direct effect of NO3ˉ, K^＋ and Na^＋ on EC5：1 was not significant, but they were enhanced by the influence of other chemical factors with relatively high correlation coefficients between EC5：1 and these factors. The ionic strength was significantly correlated with EC5： 1 which could be estimated by I=0. 017 6EC.

关 键 词：大棚 土壤盐分 电导率 

分 类 号：S156.4[农业科学—土壤学]