Mineralogical composition of the clay fraction (less than 1μ) separated from forty selected soil samples, representing six important soil types in Hainan island, was investigated by differential thermal analysis, X-ray diffraction, cation exchange capacity deterurination, chemical analysis and the measurement of ethylene glycol retention.
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张效年.海南岛热带土壤的粘土矿物[J].土壤学报,1963,11(1):36-52. S. N. CHANG. CLAY MINERALS OF TROPICAL SOILS OF HAINAN ISLAND[J]. Acta Pedologica Sinica,1963,11(1):36-52.