The crystallization of salts in three kinds of saline soil was studied,with polarizing microscope and of scanning electron microscope (SEM).It was found that the crystallization order depended on temperature,and under different temperature the main salts in soil solution were determined rapidly.The morphology of several salts in soil were studied by SEM Technique.It was found that halite (NaCl) Pras closely cemented with soil particles,thenardite (Na2SO4) was transformed from mirabilite (Na2SO4·10H2O) by dehydration,and the glaubcrite [Na2Ca(SO4)2] was formed by calcium sulfate and sodium sulfate.These salt crystals separated were clear,without any mixture.They would be formed in complex salt under certain conditions.As an example,the condition which affected the transformation of mirabilite-thenardite and its effect on the development of soil structure are discussed.
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张粹雯,王遵亲.盐渍土中盐结晶的显微研究——Ⅰ.芒硝无水芒硝的转换因素和蓬松盐土蓬松层的形成[J].土壤学报,1987,24(3):281-285. Zhang Cuiwen, Wang Zunqin. MICROSCOPICAL RESEARCH ON THE CRYSTALLIZATION OF SALTS IN SALINE SOILS[J]. Acta Pedologica Sinica,1987,24(3):281-285.