Changes of clay mineral association after HGMS for main zonal soils in central and southern China were investigated by means of XRD and chemical analytic methods.

• 以我国中南地区几种主要地带性土壤为材料，比较了物理、化学方法的浓缩效果，结合X-射线分析，探讨了高梯度磁场分选（HGMS）后土壤胶体的矿物类型、氧化铁种类的变化。