氮的

The content of total Phosphorus was very high, with the average of 2.63mg/g, while the nitrite was very low and there was no relative chemic counterbalance among nitrate, nitrite and ammoniate, because the inorganic nitrogen circle was also affected by organic nitrogen in water and sediments.

以滇池马村湾和海东湾为研究对象，对其沉积物－间隙水－上覆水三界面中的磷、氮形态作研究，其中钙结合态磷占的比例最大，其次是有机/细菌聚合态磷和残渣磷；总氮含量很高，平均值为2.63 mg/g，而亚硝酸盐氮含量很低，其它三种无机氮形态（硝酸盐氮、亚硝酸盐氮和氨氮）之间并不存在恒定的化学计量关系，这主要是无机氮循环还受水体和沉积物中有机氮的影响。

Irrigation during over-winter promoted significantly N absorption and accumulation, increased N content in the plants at early stage (before 10, April) and final single stem weight, and reduced stem flowering percentage and florets per cyme, leading to an improved quality of rush stem. With the increased level of N application, N content and accumulation in plants, stem flowering percentage and florets per cyme were significantly increased.

越冬期灌水能显著促进植株对氮的吸收和积累，增加前期（10/4前）植株含氮量和收获期单茎干重，显著减少草茎开花率和平均每花序小花数，从而改善草茎品质；随着施氮水平的提高，植株氮吸收和含氮量相应增加，开花率及平均每花序小花数显著提高。

The results show that the bud bacilli can oxidate ammonia to nitrous, and when ammonia concentration in wastewater ranges from 25 mg/L to 70 mg/L, ammonia removal amount is direct proportion to ammonia concentration in wastewater and ratio of ammonia removal ranges from 58% to 69%.

结果表明，芽孢杆菌主要进行亚硝化脱氮，在氨氮进水浓度25～70 mg/L范围内，氨氮去除量与进水氨氮浓度成正比，氨氮的去除率稳定在58%～69%。

The results show that the bud bacilli can oxidate ammonia to nitrous, and when ammonia concentration in wastewater ranges from 25 mg/L to 70 mg/L, ammonia removal amount is direct proportion to ammonia conce...

结果表明，芽孢杆菌主要进行亚硝化脱氮，在氨氮进水浓度25～70mg/L范围内，氨氮去除量与进水氨氮浓度成正比，氨氮的去除率稳定在58%～69%。

And the conditions in cell suspension culture of Mikania micrantha were studied. The results showed that sucrose was the compatible carbon sucrose, and 30g/L sucrose concentration can satisfy the growth of Mikania micrantha cell; ammonium was absorbed under different sucrose concentration that haven't demonstrated significant specificity, and was completely absorbed on the lag phase and the early logarithmic phase; while nitrate was mainly absorbed on logarithmic phase. The density-dependent of Mikania micrantha cell starting to grow and density-inhibited of cell growth were proposed, the fittest inoculating quantity of Mikania micrantha in cell suspension culture was 40g/L.

并对微甘菊细胞悬浮培养条件进行研究，结果表明，微甘菊细胞生长适宜的碳源是蔗糖，并且较合适的蔗糖浓度为30g／L；在不同蔗糖浓度下氨基氮的吸收差别不大，氨基氮在迟滞期和对数期前期已基本消耗完毕，对数期生长主要利用硝基氮，因而提出，在微甘菊细胞液体悬浮培养中，氮源可以采用初始低氨基氮浓度，对数期中间维持高硝基氮，而且对数期中逐步流加少量的氨基氮；微甘菊细胞迟滞期分裂启动存在密度依赖现象，对数期生长存在密度抑制现象，最适接种量为40g／L。

In summary, MNL and TNL could be used as indices for potential mineralizable N, which are not only suitable for the first season crop but also suitable in evaluating soil N-supplying capacity for two successive season crops; while SON, total soil N and soil microbe N were not good indices for soil potential mineralizable N in short-term.

总体上看，可溶性有机氮和土壤全氮、土壤微生物氮不能作为反映短期可矿化氮的指标；间隙淋洗通气培养淋洗液中淋洗矿质氮、淋洗总氮是评价可矿化氮的较好指标，不仅适宜于第一季作物，而且也适用于对连续两季作物土壤供氮能力的评价。

But the effluent ammonium in the anoxic reactor, where enough NO2 were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO2- and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria. There were two ANAMMOX reaction pathways in the one-stage autotrophic nitrogen removal system. One way was that after part of NH4+ was oxidized to NH2OH under aerobic conditions, NH2OH and NO2- were converted to N2O under anaerobic conditions, at last N2O was further converted to N2 which realized the nitrogen removal; Another way was that at first NO2- was reduced to NH2OH, NH2OH reacted with NH4+ to form N2H4, which was further converted to N2 subsequently, realizing the nitrogen removal.

结果表明：单级自养脱氮系统内6.72%的氨氮是通过吹脱等物化作用去除的，不超过6.02%的氨氮是通过传统硝化反硝化途径去除的，87.26%左右的氨氮是由自养脱氮途径去除的，自养脱氮反应起主要脱氮作用；在足够NO2存在且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH4+并没有被亚硝化单胞菌以NO2为电子受体氧化为NO2-和N2等化合物而得以去除，可能是因为系统内不存在该代谢功能的亚硝化功能菌；单级自养脱氮系统内存在两条ANAMMOX反应途径：其中一条途径即NH4+在好氧条件下被氧化为NH2OH后，生成的NH2OH与系统内的NO2-在缺氧条件下被转化为N2O，N2O则进一步被转化为N2而实现氮的去除；另外一条途径即NO2-首先被还原为NH2OH，生成的NH2OH则与系统内的NH4+反应生成N2H4，N2H4继续被转化为N2而实现氮的去除。

However, because of the nonspecificity of the NOS inhibitors and the compensatory interactions among NOS isoforms, the ultimate roles of endogenous NO derived from the entire NOS system are still poorly understood.

然而，由于一氧化氮合酶抑制剂的非特异性以及一氧化氮合酶亚型(神经元型一氧化氮合酶，诱生型一氧化氮合酶，内皮型一氧化氮合酶)之间的相互代偿作用，研究人员对于体内由一氧化氮合酶系统合成的内源性一氧化氮的根本作用还不是很清楚。

The organic matter decreased in Autumn and reached to a valley in Winter, then it raised to the peak in Summer and Autumn; the total N fluctuated which change range is smaller than 5%; the soil NHt+-N rose firstly, reduced in Autumn and Winter, then rose in Spring; additionally, its peak appeared in Summer and valley in Winter; the soil NCV-N"s change was more complicated than NHU+-N and fluctuated with season whose peak appeared in rain season; the available N"s change tendency was similar to NH4+-N, it decreased in May; the hydrolysable N fluctuated in smaller range, and its content decreased steadily and showed no apparent peak in a year.

有机质含量秋季下降，冬季下降到低谷，随后逐步回升，夏、秋季达到最高水平；全氮的时间动态仅为小幅度的波动，变幅不足5％。铵态氮的变化趋势为：升高—降低—升高，高峰期出现在夏季，低峰期则出现在冬季；硝态氮的时间变化比铵态氮复杂，呈明显的波浪式起伏变化，最高峰出现在雨季；速效氮的时间变化与铵态氮类似，5月出现明显低谷；水解氮表现为小幅度的不规则波动，总的走势为平稳下降，全年没有明显高峰。

It is conducive to uptake soil nitrogen for flue-tobacco on dryland soil with maize-tobacco rotation before topping (60 days after transplanting) and uptake soil nitrogen for flue-tobacco on paddy soil with rice-tobacco rotation after topping.2 The nitrogen utilization efficiency of rapeseed cake, rice straw and rape straw were 19.5%, 15.5%, 8.1% respectively, and the inorganic fertilizer nitrogen utilization efficiency were 41.1%, 42.7% and 35.7% under the combined application of organic additives and inorganic nitrogen fertilizer. The contribution rate of rapeseed cake, rice straw, rape straw to accumulated nitrogen of flue-cured tobacco were 1.0%, 2.4%, 2.7% respectively by the combined application of organic additives and nitrogen fertilizer. Flue-cured tobacco for organic nitrogen absorption meet with the nitrogen needs laws of high-quality tobacco, indicating that the combined application organic additives and inorganic nitrogen fertilizer reduces the nicotine content of tobacco, an increase of sugar/nicotine ratio and improved the quality of tobacco. In which the role of rice and rape straw is greater than the rapeseed cake can be used as measures to lower nicotine.3 Nitrogen accumulation in flue-cured tobacco with the total nitrogen input was a significant positive correlation during the growth stage of flue-cured tobacco. The total nitrogen input for the 156.3-405.5kg.hm-2, in which the soil nitrogen mineralization capacity account for 22.6%-54.3%, with an average of 34.5%, that is, soil nitrogen mineralization accounted for 1/3 of the total nitrogen input.

旱地轮作土壤有利于烤烟生长前期对土壤氮素的吸收，水旱轮作土壤增加了烤烟生长后期对土壤氮的吸收。2在有机添加物与无机氮肥配施条件下，烤烟对有机添加物中氮的吸收规律基本符合优质烟的需氮规律，其中烤烟对菜籽饼肥、稻草秸秆、油菜秸秆所含氮素的利用率分别为19.5%、15.5%、8.1%，所配施无机氮肥的利用率分别为41.1%、42.7%和35.7%，菜籽饼肥、稻草秸秆、油菜秸秆对烤烟氮素累积量的贡献分别为1.0%、2.4%、2.7%。3不同轮作方式及添加有机物条件下氮素平衡结果显示，烤烟生长期间的氮输入总量为156.3-405.5kg.hm-2，其中矿化氮量为输入总氮量的22.6%-54.3%，平均为34.5%，约为输入总氮量的1/3；肥料氮的利用率为31.4%-42.7%；植烟土壤氮素表观损失率在37.5%-57.2%，平均为46.9%，约为输入总氮量的一半。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。