本研究通过室内土壤培养试验，研究了石油化工副产品硫代硫酸铵(ats)对土壤硝化作用的影响。
A study was carried out to determine the effect of ammonium thiosulfate (ATS), a byproduct of petroleum refinery, on nitrification and to find its possible mechanism.
MEISTER包膜尿素配施DCD没有进一步增加玉米和水稻的产量，DCD抑制土壤硝化作用的效果不稳定。
The coated urea MEISTER combined with dicyandiamide (DCD) didn't further increase maize and rice yields. Moreover, the nitrification inhibition effect of DCD was not steadily.
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。
Compared with the previous crop type of soybean, rice planting in the previous season accelerated soil nitrification-denitrification rate in the following wheat season.
实验结果表明：内蒙古温带草甸草原土壤N2O产生过程以硝化作用为主。
The research results showed that the heterotrophic nitrification is the important microbiological process of N2O production in this kind soil.
由于自养硝化作用在不同季节的发生，使得草甸草原土壤N2O的产生潜势也高、低起伏变化。
The increasing and decreasing of N2O production potential result from the appearance of autotrophic nitrification in different growing period.
本文观察到酚酸类化合物分子中的酚羟基对土壤中氮硝化有关的微生物及酶具有毒性作用，是抑制土壤中氮硝化作用的主要影响基团。
It is observed that phenolic group in phenolic acids appeared toxic to microbials and enzymes, and was main group to effect inhibition of nitrification.
底层土壤的反硝化作用是土壤排放N_2O的重要来源，同时也是影响浅层地下水硝酸盐含量的重要因素。
Denitrification in subsurface is the important source of N2O emission from soil. It is also a key factor of affecting NO3 content of shallow groundwater.
底层土壤的反硝化作用是土壤排放N_2O的重要来源，同时也是影响浅层地下水硝酸盐含量的重要因素。
Denitrification in subsurface is the important source of N2O emission from soil. It is also a key factor of affecting NO3 content of shallow groundwater.
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