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1)  nitrate nitrogen concentration
硝态氮含量
1.
In order to study the water quality and response to influencing factors in typical watersheds of Three Gorges area between 2004 and 2005,the variation characteristics of nitrate nitrogen concentration were analyzed under heterogeneous landscape condition through continuous observation with method of dividing into sub-watersheds in Quxi watershed(the first-grade branch,located in Three Gorges).
为了解三峡地区典型农业流域水体水质状况以及对流域各影响因素的响应,在2004年和2005年间,对三峡库区内长江一级支流曲溪的水体硝态氮含量进行了连续监测,利用划分子流域的方法,分析了该流域异质景观条件下溪流水硝态氮含量的变化特征。
2)  soil NO-3-N content
土壤硝态氮含量
1.
The effects of irrigation amount on grain quality,yield and soil NO-3-N content were studied with strong gluten wheat "Jimai 20" and middle gluten wheat "Taishan 23" by setting four irrigation amount treatments(with 0 mm,180 mm,240 mm,300 mm irrigation amount respectively) under field condition.
选用强筋小麦济麦20和中筋小麦泰山23两个品种,在大田条件下设置不灌水(0 mm)、灌水180 mm,240mm和300 mm 4个处理,研究了灌水量对籽粒品质和产量及土壤硝态氮含量的影响。
3)  critical nitrate N concentration(CNC)
硝态氮临界含量
4)  nitrate N-containing fertilizers
含硝态氮化肥
1.
The proportion of nitrate N-containing fertilizers in the total amount of nitrogen fertilizers is lower though a huge amount of nitrogen fertilizers is produced in China,which results in the unreasonable use for the chemical fertilizers.
我国应当适当增加含硝态氮化肥的生产。
5)  soil NH_4~+-N content
铵态氮含量
6)  nitrate-N flux
硝态氮淋失量
补充资料:硝喹
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用途:抗疟疾药物。

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