| 土壤中硒酸盐还原作用与硝酸盐脱氮化作用的相关关系 |
| 摘要点击 788 全文点击 1377 投稿时间：1995-09-18 |
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| 中文关键词 硒酸盐 硝酸盐 脱氮化作用 硝酸盐还原酶 有机碳化合物 |
| 英文关键词 selenate nitrate denitrification nitrate reductase organic carbon compounds |
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| 中文摘要 |
| 为查明土壤中硒酸盐还原作用与硝酸盐脱氮化作用的相关关系,在不同类型土-水系统中,加入一定量的KNO3和Na2SeO4溶液,观察NO3-和SeO42-的化学形态转变过程。实验结果表明,硒酸盐的还原作用和硝酸盐的脱氮化作用在时空变化上具有一致性。SeO42-的存在可促进NO3-的消失,NO3-的浓度变化影响NO3-对SeO42-还原作用的抑制作用。NO3-和SeO42-形态的转化与有机碳化合物的种类、温度和硝酸盐还原酶的作用有密切的关系。 |
| 英文摘要 |
| In order to investigate the correlation between selenate reduction and nitrate denitrification,a series of related experiments were carried out in different soil-water systems,in which a given amounts of KNO3 and Na2SeO4 solution were added,and the transformation processes of chemical speciation of selenate and nitrate were studied.The results indicated that the processes of selenate reduction and nitrate denitrification are identical in temporal and spatial changes, and the transformation of their chemical speciation relates not only to a kind of organic carbon compounds and temperature, but also closely to action of nitrate reductase. |
