硅铝风化壳不同地貌单元土壤化学成分差异研究  

A Study on the Dissimilarity of Chemical Composition in the Different Geomorphic Soils in Siallitic Weathering Crust

作　　者：焦有[1] 孟祥远[2,3] 魏克循[2,3] 袁彩凤 

机构地区：[1]河南省农业科学院土壤肥料研究所 [2]河南农业大学 [3]河南省环境保护研究所

出　　处：《中国农学通报》1998年第4期12-15,共4页Chinese Agricultural Science Bulletin

摘　　要：硅铝风化壳一般呈中性到微酸性反应，土壤无石灰反应，但在不同的地形部位，土壤中可溶盐的离子组成差异较大，地下水中盐分的化学组成及矿化度也明显不同，二者有相似的盐分移动规律。洪积扇中上部土壤与湖积洼地土壤中盐分分异明显，形成两种截然不同的土壤类型，显示出地形作为五大成土因素之一的重要作用。Silica-alumina weathering crust usually appears neutral or subacidity reaction. There is no lime reaction in the soils of the crust.However, in the different landform sites,there is a large difference among the ion composition of soluble salt in soils and in the underground water. The degree of mineralization of underground water is different, and a similar principle of salt moving is show in soil and underground water. A significant differential distribution of soil salts in the middle-up per diluvial sector and the kettle hole near the lake is present obviously. Then, two different soil types appeared. It indicates that the surface relief as one of the five soil-forming factors plays an important role in soil formation .

关 键 词：地貌单元 土壤及地下水 盐分 硅铝风化壳 粘粒 

分 类 号：S153.61[农业科学—土壤学]