n 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.
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ＮＯ和的化学形态转变过程。