吉林省主要耕作土壤的粘粒矿物组成
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COMPOSITION OF CLAY MINERAL IN SOME MAIN CULTIVATED SOILS IN JILIN PROVINCE
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    摘要:

    本文采用X射线分析、差热分析及化学分析,研究了吉林省不同环境条件下的四种主要耕作土壤的粘粒矿物组成及其与土壤环境的关系。结果表明,在淋溶作用较强的酸性白浆土中,粘粒矿物的演变过程为:白云母""伊利石""蛭石,粘粒矿物组成以蛭石和水云母为主;在淋溶作用很弱的中性~强碱性土壤(黑土、黑钙土、苏打盐土)中,粘粒矿物的演变过程为:白云母""伊利石""高电荷蒙脱石,粘粒矿物组成以蒙脱石和水云母为主。

    Abstract:

    Albic,black,clernozem,and saline soils are main cultivated soils in Jilin.Albic soils are distributed over the east mountain and semi-mountain areas where there are higher relief,warm climate and more rainfall,and the soil is strongly eluviated.Chernozem and saline soils are dominated in the west plain where climate is dry,transporation is higher than precipitation and the sails are weak in eluviatiom.Black soils are Located in the central part of Jilin with transitianal climate regime between above two group of soils.The parent materials of these soils are mainly accumulative materials during different periods.Based upon some references,hydromica was dominant in the top layer of bath black soils and alhic soils,but the latter contained a small amount of kaolinite and amorphous materials.The authors considered that clay minerial components of soil are different due to the difference of environmental conditions although soils may be derived from the similar parent material or even belong to the same great group.The results show that clay(<0.002 mm) contents in the above mentioned four soils were albic soil (440 g/kg) black soil (314 g/kg)>saline soil (309 g/kg)>chernozem (119 g/kg).But when the cumulative-frenquency was 500 g/kg,a opposite sequence was found being albic soil (3.1 μm)2/Al2O3 molar ratio ranging 3.73 and 4.38.The higher SiO2/Al2O3 molar ratio as compared with red soil and yellow soil means weak weathering and desilificanon process and more 2:1 clay minerals in these soils.

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赵兰坡,井上克弘,吉田稔.吉林省主要耕作土壤的粘粒矿物组成[J].土壤学报,1993,30(3):267-273. Zhao Lanpo, Katsuhiro Inoue, Minorn Yoshida. COMPOSITION OF CLAY MINERAL IN SOME MAIN CULTIVATED SOILS IN JILIN PROVINCE[J]. Acta Pedologica Sinica,1993,30(3):267-273.

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  • 在线发布日期: 2013-02-25
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