The results of common chemical analysis indicated that the NO3-N movement was coresponded with the water condition.
结果表明，NO3—N的移动同降雨、灌水以及整个土壤系统中的水分状况密切相关。
N5+ in NO3- on the surface of the film is deoxidized into N in amine, and N in amine disappear after calcination.
研究发现，吸附在膜上的NO3-中的N5+被还原成胺类低价态的N，焙烧后该类氮化物中的N消失。
However, the increase of the two parameters above were not simultaneously, the increment of soil NO3-N accumulation was much higher than that of total N accumulation in wheat plants.
施用氮肥能提高小麦拔节期和成熟期植株全氮积累量和土壤NO3-N积累量，但两者并非同步增加，土壤NO3-N积累量增加的幅度远远大于植株全氮积累量的增长幅度。
The yields increase with the increasing of Nitrogen, but meanwhile, harmful NO3-N also increase.
随着氮肥用量的适量增加，西芹产量明显提高，但对人体有害的成分NO3-N含量也随之增加；
The dissolved nitrogen (DIN) concentrations in the Wujiang River basin were much higher than the global average values and the main form of nitrogen was nitrate nitrogen (NO3-N).
乌江流域溶解无机氮含量较世界平均水平高，其主要存在形式为硝态氮（NO_3-N）。
Because the removal efficiency of COD in RBC is well, so in the effluent the NO3-3~-N concentration is high, but COD is low.
这是因为，生物转盘的有机物去除效果很好，出水中硝氮浓度较高而碳源含量很低。
The results show the amounts of NO3-N accumulation in the soil profiles and their extents to leach into the deeper soil layers are increased significantly as the nitrogen fertilizer usage increased.
结果表明：随着氮肥用量的提高，土壤剖面硝态氮累积量明显增加，其向土壤下层淋溶的程度也越严重；
The results show the amounts of NO3-N accumulation in the soil profiles and their extents to leach into the deeper soil layers are increased significantly as the nitrogen fertilizer usage increased.
结果表明：随着氮肥用量的提高，土壤剖面硝态氮累积量明显增加，其向土壤下层淋溶的程度也越严重；
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