宜兴市温室土壤理化性质的调查和分析  

On Physico-Chemical Properties of Greenhouse Soil in Yixing Region

作　　者：高砚芳[1] 段增强[1] 郇恒福[1] 

机构地区：[1]土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所)

出　　处：《土壤》2007年第6期968-972,共5页Soils

基　　金：中国科学院知识创新工程重要方向项目(KZCX3-SW-439)资助。

摘　　要：对宜兴市的温室和露天土壤的理化性质(包括pH,电导率,各种水溶性离子的含量以及全盐量)进行调查测定,结果表明:宜兴市温室土壤pH值0-20 cm土层比深层低,有酸化趋势;土壤全盐量显著高于露天土壤,盐分已明显在0～20cm土层富集,表层土壤全盐含量均在2.00 g/kg以上;在盐分的离子组成中,阳离子以Ca2+为主,平均占全盐总量的14%,阴离子以NO3-和SO42-为主,分别平均占全盐总量的56%和23%.说明该地区温室土壤己达到中度盐渍化水平.Some physical and chemical properties including pH, electric conductivity, water soluble total salt and water soluble ions of the greenhouse soil and open field soil in Yixing region were studied. The results indicated the obvious tendencies of acidification and salt accumulation in the greenhouse soil at the 0 ~ 20 cm horizon. The main cation was Ca2+,accounting for 14% of the total salt content; while the main anions were NO3- and SO42-, accounting for 56% and 23% of the total salt content respectively; The greenhouse soil in this region has reached the level of moderate secondary salinization.

关 键 词：温室土壤 次生盐渍化 宜兴市 

分 类 号：S714.8[农业科学—林学]