Isotope dilution method was adopted in lab for the study of the effect of crude oil contamination on the rate of 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。
The results showed that the effect of lime-nitrogen on the inhibition of nitrification is obvious, and it inhibited urease activity and decreased the hydrolytic rate of 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。
The batch experiments indicated the nitrification rate of MBR were higher than AS and the organic carbon removal rate and denitrification rate were almost equal.
在静态实验中，MBR中污泥的硝化速率明显高于AS，有机物降解速率和反硝化速率几乎相等。
Compared with the previous crop type of soybean, rice planting in the previous season accelerated soil nitrification-denitrification rate in the following wheat season.
与前茬种植大豆相比，前茬作物水稻促进了后季麦田土壤硝化-反硝化作用。
The maximum nitrification ratio of fertilizer N in soil is up to 20%-42%, according to the soil fertility and rate of fertilizer N applied.
氮肥中N在土壤中的净硝化率最高达42％，因土壤肥力和施N量不同而异。
The maximum nitrification ratio of fertilizer N in soil is up to 20%-42%, according to the soil fertility and rate of fertilizer N applied.
氮肥中N在土壤中的净硝化率最高达42％，因土壤肥力和施N量不同而异。
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