摘要
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。结果表明：ＨＧＭＳ处理后，土壤粘粒层状硅酸盐矿物含量相对减少，高岭含量减小的幅度较大，而２∶１型矿物含量变化幅度较小；ＨＧＭＳ处理后，氧化铁矿物中的Ｇ／（Ｇ＋Ｈ）基本上不发生变化；对以２∶１型层状硅酸盐为主的土壤粘粒。
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. Results indicated that phyllosilicates were decreased after HGMS treatment. But decreasing degree of 2∶1 phyllosilicates was less than kaolin. The goethite/(goethite+hematite) (G/G+H) value in Fe oxides was basically unchanged slightly after and before HGMS treatment. For the soils in which 2∶1 phyllosilicate dominated, contents of Fe oxides by HGMS treatment were higher than those by 5 mol/L NaOH soluable treatment.
出处
《华中农业大学学报》
CAS
CSCD
北大核心
1997年第3期277-281,共5页
Journal of Huazhong Agricultural University
基金
国家自然科学基金
