中文摘要：

本研究通过土壤泥浆厌氧培养的方法,在水稻土中添加不同质量浓度淀粉和纤维素,探讨多糖作为电子供体对异化Fe（Ⅲ）还原过程的影响。结果表明,在2种水稻土泥浆的厌氧培养过程中,淀粉、纤维素可以促进水稻土中的异化Fe（Ⅲ）还原,其质量浓度在0～20 g/L时,Fe（Ⅱ）最大累积量和速率常数随质量浓度增加而增大,其对土壤中Fe（Ⅲ）氧化物异化还原的促进作用与土壤pH、有机质和无定形铁含量有关。对培养过程中pH与异化铁还原动力学数据的比较发现,在微生物正常生长的pH范围内,较低的pH利于Fe（Ⅲ）的还原。

英文摘要：

Effects of amylose such as starch and cellulose on the dissimilatory reduction of iron oxides in the paddy soils were investigated by soil slurry anaerobic incubation method.The acumulation of ferrous and the rate constant could be enhanced by the addition of starch and cellulose with its concentration increased from 0 to 20g/L.The enhancement is correlated with soil characters such as pH,organic matter,and amorphous iron content.Compare with the kinetics parameters of Fe（Ⅲ） reduction in anaerobic incubation,in the range microbe normal growing pH,the lower pH is more appropriate.