It was shown that the contents of Feo, Fed and Fee and the ratio of Feo/Fed were lower in rice rhizosphere grown in paddy soils, and the same was true for Fee content in red soils.

• 红壤中除络合态铁的根际内外分布趋势与水稻土相同外,其余均与水稻土相反。穆斯堡尔谱特征表明,根际中氧化铁的四极矩分裂较大,内磁场较低,即根际中氧化铁被活化。差热分析结果表明根际土的持水力强于非根际土。