安徽沿淮地区潮土理化性质及低养分机理研究  

STUDY OF PHYSICOCHEMICAL NATURE AND LOWER-NUTRIENT MECHANISM OF MOISTNESS SOIL DISTRIBUTING ALONG THE HUAI-RIVER IN ANHUI PROVINCE

作　　者：宋晓梅[1] 桂和荣[1] 陈兆炎[1] 

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《安徽地质》2004年第2期131-135,共5页Geology of Anhui

摘　　要：利用大量的测试数据,综合分析了安徽沿淮潮土的耕层养分特征;通过四个土属典型剖面的描述和测试,研究了潮土的理化性质:透气性较好、碱性、养分低且随深度递减、有机质与全氮同步变化等。根据土壤中氮循环原理分析了潮土中氮含量低的实质,即有机质及碳源供应不足、潜水位高及水淹潮土促进了反硝化作用、种植结构的影响等。对原状土铵吸附试验成果进行了计算分析,得出沿淮潮土铵吸附容量值。从而揭示了安徽沿淮潮土低养分(低产)机理,为本区及类似条件下其它地区的土壤改良提供了参考。We synthesized many test data and analyzed the nutrient features of the topsoil of the moist soil distributing along the Huai River in Anhui Province.Based on the description and test of typical section of four types of the moist soil,we also studied the physicochemical nature of the soil,which shows better performance to let air in,alkalinity,lower nutrient which decreases with depth,and synchronous change of organic matter and full nitrogen.On the basis of the principle of nitrogen circulation in soil,we analyzed the essence of lower nitrogen content in the soil,i.e.insufficient supply of organic matter and carbon source, anti-nitrification promoted by the higher ground-water table and the soil inundated by flood,and the influence of planting structure.The capacity of absorbed ammonium by the soil is obtained through the test of absorbed ammonium by the soil in its original state.Thus,the mechanism of the lower nutrient of the moist soil distributing along the Huai-River is revealed,which can be used for reference for soil improvement in this locality and other district with similar conditions to this locality.

关 键 词：潮土 养分期理化性质 氮循环 安徽沿淮 

分 类 号：P642.11[天文地球—工程地质学]