期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2003

29

3

226-230

10.3321/j.issn:1007-1032.2003.03.014

教育部高校骨干教师资助计划

本校为第一机构

为探讨湖南红壤不同土层对SO42-的吸附性能和不同pH值酸雨对土壤SO42-解吸的影响,在实验室条件下,将不同浓度(NH4)2SO4溶液和不同pH值溶液连续浸泡湖南长沙和郴州2种红壤.结果表明:2种红壤对SO42-的吸附能力较强,并且在0～20 cm层加入液SO42-浓度较低时,土壤SO42-吸附量随着土壤深度的增加而增加.不同pH值的解吸液对同一土层SO42-的解吸率随pH值的下降而降低;同时,同一pH值的解吸液对SO42-的解吸率随土壤深度的增加而减小.当解吸液pH值低于土壤pH值时,解吸液酸度对长沙土壤SO42-解吸率的影响比对郴州土壤SO42-解吸率的影响更显著;长沙土壤吸附SO42-的能力比郴州土壤强,并且前者吸附的SO42-比后者...

To study the characteristics of SO42- adsorption of different soil horizons from red soils in Hunan Province and the effect of solutions of different pH values on SO42- desorption of the these soils, the two red soils in Hunan Province are treated with different concentrations of (NH4)2SO4 solutions and solutions of different pH values through a batch experiment under laboratory conditions. The results show that the two tested red soils have a strong ability to absorb sulfate, and adsorption amount of SO42- rises w...