摘要
用逐步连续分级浸提法研究了我国北方主要土壤中Ｍｎ的存在形态及其与活性Ｍｎ的关系．碱性土壤中Ｍｎ的形态分布特征为氧化锰态Ｍｎ＞残留态Ｍｎ＞有机质结合态Ｍｎ＞无定形铁结合态Ｍｎ＞晶形铁结合态Ｍｎ＞代换态Ｍｎ，与酸性土壤的排列顺序明显不同．碱性上壤条件导致土壤中的Ｍｎ更多地向生物无效态转化，使得土壤的活性Ｍｎ主要以氧化锰态和代换态存在．
Studies on the relationship between Mn forms Mn and active Mn in main soils of northChina show that in alkaline soil, the amount of Mn forms is MnO-Mn>Res-Mn>OM>Mn>AFeO-Mn>FeO-Mn>Ex-Mn, which is obviously differed from that in acid soils.Under alkaline condition, soil Mn can be transformed from bioavailable to unavailable,and thus, active Mn mainly comes from Mn oxide and exchangeable Mn.
出处
《应用生态学报》
CAS
CSCD
1995年第S1期67-73,共7页
Chinese Journal of Applied Ecology
关键词
化学形态
活性Mn
土壤因子
碱性土壤
Chemical form, Mn, Active Mn, Soil factors, Alkaline soil
