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氧化铁虽是土壤粘粒中的次要矿质成分,但它具有较高的活性,对土壤性质有重要的影响。作为胶结物质之一,氧化铁的形态及其含量,对土壤团聚体的形成,亦起重要作用。某些水稻土中细孔隙增多,土块趋向紧实等问题,似乎与土壤中氧化铁存在形态有关。
Although iron oxide is a secondary mineral component of soil clay, it has high activity and has an important effect on soil properties. As one of the cementing substances, the form and content of iron oxide also play an important role in the formation of soil aggregates. In some paddy soils, there are many problems such as the increase of fine pores and the compaction of soil mass, which seems to be related to the existing form of iron oxide in the soil.