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应用生态学报 ›› 1995, Vol. 6 ›› Issue (s1): 67-73.

• 研究论文 • 上一篇    下一篇

北方土壤中Mn的形态及其与活性Mn的关系

丁维新   

  1. 中国科学院南京土壤研究所, 南京210008
  • 收稿日期:1993-08-17 修回日期:1993-11-28 出版日期:1995-12-25 发布日期:1995-12-25

Relationship between Mn forms and active Mn in soils of north China

Ding Weixin   

  1. Institute of Soil Science, Academia Sinica, Naming 210008
  • Received:1993-08-17 Revised:1993-11-28 Online:1995-12-25 Published:1995-12-25

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.

关键词: 化学形态, 活性Mn, 土壤因子, 碱性土壤

Abstract: Studies on the relationship between Mn forms Mn and active Mn in main soils of north China 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.

Key words: Chemical form, Mn, Active Mn, Soil factors, Alkaline soil