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当前位置: 首页 > 文章 > 施加脱硫石膏对苏打盐化土不同层次主要离子的影响 山西农业科学 2016,44 (1) 48-52
Position: Home > Articles > Effect of Desulfurization Gypsum on Leaching of Major Ions in Different Heavy Soda Saline Soil Layers Journal of Shanxi Agricultural Sciences 2016,44 (1) 48-52

施加脱硫石膏对苏打盐化土不同层次主要离子的影响

作  者：
崔媛;张强;王斌;黄高鉴;李丽君
单  位：
山西大学生物工程学院;山西省农业科学院农业环境与资源研究所
关键词：
脱硫石膏;苏打盐化土;盐离子(Na+,Ca2+,SO42-,CO32-);改良效果
摘  要：
通过土柱淋洗试验,研究重度苏打盐化土施加不同量的脱硫石膏(0,5.5,11,22,33 g/kg)后,土壤不同层次(0~20,20~40,40~60 cm)主要盐离子(Na~+,Ca~(2+),SO_4~(2-),CO_3~(2-))的累积规律,阐明不同用量脱硫石膏对重度苏打盐化土的改良效果。结果显示,施用脱硫石膏可以有效降低苏打盐化土pH值,提高土壤导水能力,促进有害离子Na~+的淋洗;脱硫石膏改良后表层(0~20 cm)土壤Na~+,CO_3~(2-)含量和pH值降幅最大,表层(0~20 cm)改良效果最好;CO_3~(2-)和Na~+在淋洗作用下向下迁移,呈现CO_3~(2-)和Na~+在土壤底层(40~60 cm)累积;添加脱硫石膏的处理Ca~(2+)和SO_4~(2-)在土壤表层(0~20 cm)显著增加(P<0.05);土壤pH值与土壤层次间呈显著正相关(P<0.05,r=0.855);苏打盐化土改良效果与脱硫石膏用量并不呈正相关关系。在试验范围内,22 g/kg脱硫石膏用量的改良淋洗效果较好。
译  名：
Effect of Desulfurization Gypsum on Leaching of Major Ions in Different Heavy Soda Saline Soil Layers
作  者：
CUI Yuan;ZHANG Qiang;WANG Bin;HUANG Gao-jian;LI Li-jun;College of Biological Engineering,Shanxi University;Institute of Agricultural Environment & Resources,Shanxi Academy of Agricultural Sciences;
关键词：
gesulfurization gypsum;;soda saline soil;;salt ions(Na+,Ca2+,SO42-,CO32-);;improvement effect
摘  要：
To clarify the effectiveness of different dosage of flue gas desulfurization gypsum for improvement effect on heavy soda saline soil and provide scientific basis for the soda-saline soil in Datong, a soil-column leaching experiment was done to study the varying pattern of salt ions(Na~+, Ca~(2+), SO_4~(2-), CO_3~(2-))of different soil layers(0-20, 20-40, 40-60 cm)in leachate under different dose of desulfurization gypsum(0, 5.5, 11, 22, 33 g/kg)applying into tested soil. The results showed that soil p H significantly decreased, soil infiltration velocity was improved and elution efficiency of Na+had being deeply promoted by applying the desulfurization gypsum. The Na+content, CO_3~(2-) content and soil pH had a pretty significant drop at topsoil layers(0-20 cm)and the effect of improvement at topsoil layers(0-20 cm)was the best. The direction of Na~+ and CO_3~(2-)migration was down, which led to Na+and CO_3~(2-)accumulate at the base of the soil layers(40-60 cm). The Ca~(2+)and SO_4~(2-) increased significantly at topsoil layers(0-20 cm)by desulfurised gypsum application(P<0.05). Soil pH and soil layer had significant positively correlation(P<0.05, r = 0.855). The effect of improvement and the amount of desulfurization gypsum were not positively correlated. The optimum application rate of desulfurised gypsum was 22 g/kg.

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