氮

The results of culture experiment show that the volume of the gas produced by ammonification in the vagetated water is about 2 times as much as that in the unvegetated open water.

各种水生高等植物群落内氮循环细菌分布及微环境的差异，促进了有机氮的分解、铵态氮的硝化和挥发、硝酸盐氮的反硝化作用。

There were a difference between ammonium and nitrate nutrition,and more ammonium was absorbed by soybean than nitrate.

铵态氮和硝态氮对大豆的营养作用不同，大豆吸收铵态氮比例大于硝态氮。

The results showed that both continuous and intermittent aeration system could implement completely autotrophic nitrogen removal.

结果表明，连续和间歇2种曝气方式均可实现单级自养脱氮，在进水氨氮浓度为160 mg/L左右，温度30℃±2℃，pH值7.8～8.2，HRT为2 d，DO为0.8～1.0 mg/L的条件下，连续曝气系统的氨氮转化率和总氮去除率分别达到80%和70%。

As a cationic exchanging membrane in electrodialysis , the membrane was used to treat inorganic wastewater with high concentration of inorganic ammonia and azote.

将此膜应用于电渗析去除高浓度氨氮废水的处理研究中，结果表明，该膜对氨氮的选择透过性较好，能有效地透过废水中氨氮，氨氮透过率可达80%。

This article introduced the nitride pollution present situation in the atmosphere,mainly taking Shanghai and Guangzhou as the example,and analyse its pollution origin from several aspect such as the sources of energy using and motor vehicle tail gas blowoff etc.

主要以上海、广州为例介绍大气中氮化物的污染现状，并从能源使用、机动车尾气排放等几方面分析氮化物污染的来源，另外从氮化物的破坏力以及造成酸雨等方面介绍大气中氮化物的危害。

The result of study showed:1 The effect of some inorganic urea inhibitor enzyme indicated boracic acid inhibits the activeness of urea enzyme in soil well, delayed the speed of urea hydrolysis in the soil and decreased the volatilization of ammonia , boracic acid,can be chosen as a inorganic urea enzyme inhibitor.2 The effect of some organic urea inhibitor enzyme showed that the dissociative Humic Acids of turfy soil and weathered coal inhibit the activeness of urea enzyme in soil well.

室内模拟试验，对几种缓释氮肥的释氮研究表明，和其它几种氮肥相比，PCF和PSF的控氮时间都较长。 6。盆栽试验表明，PCF的释氮效果比其它缓释氮肥的要好，且在油菜生育的各个时期，释氮都较充足，是适合油菜的良好缓释氮肥。

The results showed that (1) compared with conventional N treatment, the N loss of economic N treatment reduced while NUE and N residue in soil improved under water-saving condition;(2) Use efficiency of fertilizer applied as basal fertilizer was higher than that as top-dressing fertilizer under water-saving condition;(3) The fertilizer N residue rate was from 29% to 41%, and 60% of N residue, which distributed in 1m depth soil concentrated in 0～20cm surface layer;(4) In whole growing stage of wheat, fertilizer N hadn't leach to 130cm depth;(5) NUE of economic N treatment under conventional irrigation decreased by 16.6% compared with the same N treatment under water-saving condition.

结果表明，与常规施氮量处理相比，节水灌溉条件下节肥施氮量处理的氮肥损失率降低，氮肥当季利用率和土壤残留率提高；基施氮肥的利用率高于追施氮肥；土壤肥料氮的残留率在 2 9%～ 41 %之间，分布于 1m土层中，其中60 %以上集中在 0～ 2 0cm土层；在整个小麦生长季内，肥料氮并没有淋洗到 1 30m以下。节肥施氮量在常规灌溉下的当季利用率比在节水灌溉下降低 1 6 6%。

The results showed that with the increase of nitride partial pressure in the range of 2. 0～8. 0×10〓Pa, the hardness of NbN, TaN single layer films decreased, but the hardness of TiN films kept unchanged. The crystal structure of TaN films changed from the mixture of tetragonal β-Ta and faced-center cubic δ-TaN to hexagonal TaN and that of NbN films from FCC δ-NbN to hexagonal ε-NbN. The crystal structure of TiN films is FCC in all the range of partial pressure researched.

研究结果表明：在2.0～8.0×10〓pa的氮分压之间，随氮分压的升高，TaN和NbN薄膜硬度下降，而TiN薄膜的硬度值不随氮分压的变化而变化；TaN薄膜的相结构由低氮分压时的正方β-Ta和面心δ-TaN所组成的两相混合物过渡到六方TaN结构，NbN薄膜则由面心立方结构的δ-NbN逐渐过渡到六方结构ε-NbN，而TiN薄膜的晶体结构基本不随氮分压的变化而变化，均为面心立方结构。

The average value of the total nitrogen,ammonium nitrogen,nitrate nitrogen,available nitrogen and organic nitrogen were 4591 mg/kg,12.66 mg/kg,1.8 mg/kg,26.25 mg/kg and 4598 mg/kg respectively.The forms of nitrogen that we concerned were decreased from plow layer to subsoil in five paddy soil profile.

土壤表层全氮、铵态氮(NH_4~-N)、硝态氮(NO_3~--N)、碱解氮、有机氮均匀含量分别为4591 mg/kg、12.66 mg/kg、1.8 mg/kg、26.25 mg/kg、4598 mg/kg，土壤表层各形态氮素的含量在剖面中的分布特征是从表层到底层呈下降趋势。

But when it came to different summer-sown maize, the straw of normal summer-sown maize absorbed less nitrogen absorption than grain did, while the straw of high oil summer-sown maize absorbed more nitrogen absorption than grain did. This it to say, high oil summer-sown maize need more nitrogen, when use N2, the nitrogen redundance was not happened, not like normal summer-sown maize.

但就各器官来说，普通夏玉米和高油夏玉米高氮时的表现有差异，前者全年籽粒化肥氮吸收量低于秸秆，而后者高于秸秆，表明高油夏玉米需氮量多，高氮时没有发生氮素冗余，而普通夏玉米却发生了氮素冗余，致使吸收的氮更多地残留在秸秆中。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。