安徽省水稻土中锰形态及其影响因素研究  

Study on the Manganese Forms and their Influential Factors in Paddy Soils of Anhui Province

作　　者：李孝良[1,2] 倪进娟[3] 陈效民[2] 于群英[1] 

机构地区：[1]安徽科技学院城建与环境学院,安徽凤阳233100 [2]南京农业大学资源与环境科学学院,江苏南京210095 [3]合肥工业大学资源与环境工程学院,安徽合肥230009

出　　处：《土壤通报》2010年第6期1333-1338,共6页Chinese Journal of Soil Science

基　　金：国家自然科学基金项目(40371055);安徽省教育厅自然科学研究项目(2006kj199B)资助

摘　　要：通过对安徽省不同母质发育的稻田土壤的采样分析,研究了水稻土中不同形态锰含量及其与土壤性质的关系。研究结果表明:供试水稻土全锰含量低于全国平均水平,含量在191.7～805.0 mg kg-1之间,平均为375.0 mg kg-1,有效锰含量平均为25.4 mg kg-1。不同锰形态含量有较大差异,其占全锰比例顺序为残渣态>铁锰氧化态>有机态、可交换态>碳酸盐结合态,Tessier法与BCR法锰形态分级结果有明显的相关性。各形态锰以有机态锰、可交换态锰、碳酸盐结合态锰、铁锰氧化态锰活性较高,与有效锰之间呈现显著或极显著正相关关系。土壤pH值、有机质和粘粒含量是影响土壤锰形态和含量的主要因素。Through the analyses of the paddy soils in Anhui Province,the varied forms of manganese（Mn） contents in different paddy soils and their influential factors were studied.The results showed that the total manganese（T-Mn） contents of the tested paddy soils ranged from 191.7 mg kg-1 to 805.0 mg kg-1,with an average of 375.0 mg kg-1 lower than the national average of Mn content.The available Mn（A-Mn） content of the tested paddy soils was 25.4 mg kg-1 in average.There was bigger difference among the manganese form content,and the proportion of the Mn forms in the total manganese was residue form（RES-Mn）iron-manganese oxidation form（OFe-Mn）organic form（OM-Mn）,exchangeable form（Ex-Mn）carbonate form（CAB-Mn）.The activities of the OM-Mn,the Ex-Mn,the CAB-Mn and the OFe-Mn were higher than the others.The major influential factors of the Mn forms contents were soil pH,soil organic matter contents and soil clay contents.

关 键 词：水稻土 锰 形态 影响因素 有效性 

分 类 号：S153.6[农业科学—土壤学]