Isotope dilution method was adopted in lab for the study of the effect of crude oil contamination on the rateof nitrogen mineralization and nitrification in soil.
在实验室中用同位素示踪法，研究了土壤中不同石油污染量对氮矿化及硝化速率的影响。
2
The results showed that the effect of lime-nitrogen on the inhibition ofnitrification is obvious, and it inhibited urease activity and decreased the hydrolytic rateof urea.
结果表明，石灰氮对硝化作用有明显的抑制效应，并能抑制脲酶活性，延缓尿素水解。
3
The batch experiments indicated the nitrificationrateof MBR were higher than AS and the organic carbon removal rate and denitrification rate were almost equal.