中国土壤胶体研究——ⅥⅡ.五种主要土壤的粘粒矿物组成
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SOIL COLLOID RESEARCHES Ⅷ. THE MINERALOGICAL COMPOSITION OF THE COLLOIDS OF FIVE IMPORTANT SOILS IN CHINA
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    摘要:

    粘粒矿物对土壤特性和肥力的意义是众所周知的。土壤胶体的特性主要决定于粘粒矿物的类型及其数量。随着土壤科学研究的进展,粘粒矿物组成的分析工作,已由定性分析逐渐进入到定量分析。在粘粒矿物的鉴定中,X射线分析是一个很重要的手段,也有用来进行粘粒矿物的定量分析,但由于不同土壤中的矿物结晶程度差异很大,所以侧定的准确性较差。因此,在土壤粘粒矿物分析方面,X射线一般只能作为定性和半定量之用,其分析结果往往用“主导”“伴随”“较多~较少”等术语来表示。目前这种表示粘粒矿物组成的方法已不能满足研究工作的需要,何况不同学者的判读标准又很难一致。

    Abstract:

    The mineralogical composition of the sol colloids separated from black soil,loessial soil,yellow brown earth,red earth and laterite have been quantitatively analysed by the systematic method of Alexiades and Jackson.In order to have the determination of the mineralogical composition of soil colloid more suitable for the actual conditions of these soils,the analytical methods of kaolinite and illite have been modified.The content of kaolinite was determined by NH4Cl retention measurement instead of selective dissolution analysis.For estimating the content of illite,5% of K2O extracted by 1 N HNO3 regarded as a parameter.The content of mica was calculated by means of 10% of the amount of total K2O substracted K2O extracted by 1 N HNO3.The composition of the clay minerals of the five soils varies greatly.The highest content of montmorillonite is found in black soil,and it is getting decreased gradually from the north to the south.While the content of kaolinate tends to increase gradually from the north to the south.Vermiculite and transitional minerals of 14Å are found in the soils of subtropical China.

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蒋梅茵,杨德涌,熊毅.中国土壤胶体研究——ⅥⅡ.五种主要土壤的粘粒矿物组成[J].土壤学报,1982,19(1):62-70. Jiang Mei-ying, Yang De-yong, Y. Hseung. SOIL COLLOID RESEARCHES Ⅷ. THE MINERALOGICAL COMPOSITION OF THE COLLOIDS OF FIVE IMPORTANT SOILS IN CHINA[J]. Acta Pedologica Sinica,1982,19(1):62-70.

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  • 在线发布日期: 2013-02-25
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