The effect of alternative freezing and thawing enhances the content of ammonium nitrogen greatly.
冻融交替显著地增加土壤中铵态氮的含量。
The mycelia well utilized yeast meal and peptone, but not very well nitrate nitrogen and ammonium nitrogen.
在对氮源的利用上，供试香灰菌株对酵母粉、麸皮和蛋白胨的利用较好，对硝态氮和铵态氮的利用较差。
There was a significantly positive correlation between N2O flux and soil ammonium nitrogen content(P<0.01).
N2O通量与土壤铵态氮含量呈极显著正相关（P<0.01）；
Neither ammonium nitrogen nor nitrate nitrogen with high concentration in the medium helped to the growth of bacteria.
培养基中高浓度的氮不论是铵态氮还是硝态氮均不利于菌株的生长；
The efficiency of removing ammonium nitrogen from wastewater is different by immobilized nitrifying bacteria making with different ratio.
不同比例因素制备的固定化硝化细菌小球去除氨氮的效率差别很大。
The result indicates that natural clinoptilolite can remove ammonium nitrogen with the efficiency of 95% and suspended particulate of 90.94%.
结果表明：天然斜发沸石对氨氮的去除率可达到95 %，对悬浮物的去除率可达到90 .94%。
The concentration of ammonium nitrogen in horizontal migration decreased with the increase in unsaturated soil water diffusivity in power function.
铵态氮水平运移的浓度受非饱和土壤水扩散率的影响，并随非饱和土壤水扩散率的升高而呈幂函数曲线下降。
The nitrate nitrogen makes the vegetable nitrate quickly rising, the ammonium nitrogen especially the ammonia chloride nitrate decrease the nitrate content.
硝态氮使蔬菜硝酸盐含量迅速上升，铵态氮尤其氯化铵硝酸盐增加较少。
When the infiltration ammonium concentration is high, the main factors are nitration of ammonium nitrogen by biological actions, dispersivity and permeability of the soil.
当入渗铵态氮浓度较大时，影响铵态氮迁移转化的显著因素是生物作用导致的铵态氮的硝化，以及土壤的渗透系数、弥散度等因素。
The excessively high proportion ammonium nitrogen does not avail the enhancement of tobacco leaf mean price, it is highest if matched by 75% nitric nitrogen and 25% ammonium nitrogen;
过高的比例施用铵态氮不利于烤烟均价的提高，以75％的硝态氮和25％铵态氮配施烤烟均价最高；
This paper reports the effect of DCD in seedling stage to soil microorganism of bacteria, mold and actinomycetes, and the concentration changes of both ammonium nitrogen and nitrate nitrogen in soil.
实验研究了双氰胺在玉米苗期对土壤微生物细菌、霉菌和放线菌的影响，及对土壤中铵态氮和硝态氮贮量变化的影响。
The invention of a process to synthesise nitrogen cheaply into ammonium, a fertiliser, paved the way for the huge increase in food production in the 20th century.
在20世纪，工业化合成氮的发明使指生产军火和肥料成为可能，进而导致了粮食的急剧增长。
The invention of a process to synthesise nitrogen cheaply into ammonium, a fertiliser, paved the way for the huge increase in food production in the 20th century.
一项发明可以将氮简单转换成铵氮，后者是一种肥料，他的使用使得二十世纪的粮食生产有了巨大的增长。
These creatures, now called anammox bacteria, transform caustic and hazardous ammonium into dinitrogen, the harmless nitrogen gas that makes up 78% of the air we breathe.
这些微生物被命名为anammox，它可以把碱和有害的氨转化成氮气，无害的氮气是我们呼吸的空气的主要组成成分，占到了空气的78%。
Additionally the microorganisms must be supplied in the growth medium with nitrogen-containing compounds such as ammonium sulfate, ammonia, or urea, as well as with inorganic phosphates.
另外必须提供的微生物在与含氮如硫酸铵，氨水或尿素化合物生长介质，以及与无机磷酸盐。
Liquid ammonia, mainly used as refrigerant or to make Ammonium and nitrogen, is an important yet dangerous chemical.
液氨主要用作制冷剂及用于制取铵盐和氮肥，是化学工业中一种重要的、存在危险性的化学品。
Ammonium sulfate is also used as a fertilizer (although in much higher concentrations), but it only contains nitrogen but neither phosphorus nor potassium.
作为肥料应用的硫酸铵浓度会更高，但其中只有氮的成分，没有磷或钾。
The fixation and adsorption of ammonium are important parts of nitrogen recycle in soils.
铵的矿物固定和吸附是土壤氮素循环中的重要环节。
The best form of usable nitrogen seems to be a combination of di-ammonium phosphate (DAP) and yeast extract.
最好的方式，似乎是一种可用氮结合荻磷铵(磷酸二铵)、酵母粉。
The nitrogen, which is in ammonium in the ammonia sulfite pulping waste liquor of rice straw, is converted into organic nitrogen by using oxide-ammonium decomposition method.
稻草亚硫酸铵法制浆废液采用氧化氨解的方法，将废液中的铵态氮转化为有机氮。
The technology of magnesium ammonium phosphate(MAP) is one of effective removal of high strength ammonia nitrogen and phosphate in wastewater.
磷酸铵镁（MAP）技术是一种有效去除废水中高浓度氨氮和高浓度磷酸盐的技术。
At its liquid fermentation culture process, the most appropriate carbon source is glucose and white sugar, while the most appropriate nitrogen source is Ammonium Tartrate.
其液体培养最适碳源为葡萄糖、市售白糖；最适氮源为酒石酸铵。
The new anaerobic ammonium oxidation(Anammox) process for simultaneous removal of nitrogen and sulphur can avoid these problems.
同步脱氮除硫厌氧氨氧化过程的发生，可以避免上述问题。
Regress the load of nitrate, ammonium and total nitrogen by MQ equation.
对硝氮、氨氮、总氮产污负荷进行MQ回归，提炼回归方程。
Ammonium assimilation is a very important process to transform inorganic nitrogen into organic nitrogen for plants.
氨同化作用是植物将无机氮转化成有机氮的一个重要过程。
The results indicated that adding DCD significantly increased ammonium content and decreased nitrate nitrogen content at the same time.
赤红壤中添加DCD在同一培养时间均能显著降低土壤较高的铵态氮含量，提高硝态氮含量。
The effects of a new fertilization method-NDSA(nitrogen depot with saturated ammonium) on the loss of nitrogen from ammonia volatilization and N leaching were studied by imitation experiments.
采用室内模拟氨挥发和模拟降雨土柱淋洗方法，研究了NDSA（饱和铵贮库）施肥法对降低氨挥发和氮素淋失的作用。
An anaerobic fluidized bed (AFB) reactor was used as anaerobic ammonium oxidation (ANAMMOX) reactor. The nitrogen removal of leachate was studied in this reactor.
采用厌氧流化床反应器(afb)作为厌氧氨氧化反应器，对垃圾渗滤液脱氮进行了研究。
The experiment and theory all indicates that the effect of ammonium salt as the degumming nitrogen additive is better than the effect of nitrate as the degumming nitrogen additive.
试验和理论都表明，以铵盐作为含氮添加剂的脱胶效果要好于以硝酸盐作为含氮添加剂的脱胶效果。
The results showed that the super absorbent polymers added in ammonium bicarbonate could obviously promote the absorption of nitrogen, phosphorus oxide and potassium oxide by maize plants.
田间小区试验结果表明，在碳酸氢铵肥料中配合施用适量高吸水性树脂，明显促进玉米植株对氮、磷、钾的吸收。
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