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应用穆斯堡尔谱分析、化学分析和光学显微镜分析，对福建三条最有代表性的土壤垂直带谱中的粗粒及粘粒氧化铁矿物进行研究。结果表明，赤铁矿从黄壤→黄红壤→红壤→赤红壤逐渐增多而针铁矿逐步减少，粗粒原生矿物组合类型从复杂趋向简单。铁的游离度及晶胶比从黄壤→黄红壤→红壤逐渐升高而活化度逐渐下降，但亦红壤例外，这可能与其成土年龄有关。本文还讨论了土壤分类的有关问题。
Mossbauer spectroscopy, chemical analysis and optical microscopy were used to study the three most representative samples of coarse-grained and mucilaginous iron oxides in soil vertical bands. The results showed that the hematite gradually increased from yellow soil → yellow soil → red soil → red soil and the goethite decreased gradually. The type of coarse primary mineral assemblages tended to be complicated from simple to complex. The iron freeness and crystallinity ratio gradually increased from yellow soil → yellow soil to red soil and the degree of activation decreased gradually, but the red soil was exceptionally, which may be related to its age. This article also discusses the issues related to soil classification.