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1)  Non exchangeable nitrogen
非交换铵态氮
2)  non-exchangeable ammonium
非交换性铵态氮
3)  exchangeable NH_4~+
交换态铵
1.
Effects of maize and rice straw amendment on the pH,CO_2,and exchangeable NH_4~++ of submerged soil;
添加玉米和水稻秸秆对淹水土壤pH、二氧化碳及交换态铵的影响
4)  exchangeable-Nitrogen
可交换态氮
5)  ammonium nitrogen
铵态氮
1.
The comparative analysis of ammonium nitrogen and rapidly available potassium between meadow soil and yellow red soil of Mount Wuyi;
武夷山草甸土与黄红壤铵态氮和速效钾对比分析
2.
The response of dry matter accumulation,turgor pressure and photosynthetic rate in cucumber seedlings to nitrate and ammonium nitrogen;
黄瓜幼苗干物质积累、膨压及光合速率对铵态氮和硝态氮的响应
3.
Effects of different proportions of ammonium nitrogen and nitric nitrogen on the yield and quality of the tobacco;
铵态氮与硝态氮不同配比对烟叶产量和质量的影响
6)  NH4+-N
铵态氮
1.
This paper studied the removal effect of citric acid,oxalic acid and acetic acid on cadmium(Cd),lead(Pb),copper(Cu)and zinc(Zn)in sewage sludge,and the changes of NO3--N and NH4+-N concentrations in extracted liquid and sludge before and after treated.
研究了柠檬酸、草酸和乙酸溶液对污泥中重金属(Cd、Pb、Cu和Zn)的去除效果,以及处理前后析出液和污泥中硝态氮和铵态氮的浓度变化。
2.
A soil incubation experiment was carried out to explore the effect of combined application of potassium,urea with DCD or different organic materials on NO3——N and NH4+-N content in vegetable soils,and the relationship between urease and the activities of invertase.
土壤铵态氮含量随施钾量的增加而增加,而硝态氮含量则呈下降趋势。
3.
Based on field experiment,the content of NH4+-N in cotton field soil of drip irrigation under membrane and subsurface drip irrigation is analyzed from the angles of time,level and vertical spatial distribution in this paper.
以田间试验为基础,从时间、垂直和水平空间分布的角度对膜下滴灌、地下滴灌棉田土壤铵态氮含量进行了分析。
补充资料:铵态氮
分子式:
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性质:以铵离子(NH4+)形态存在于土壤、植物和肥料中的氮素,常用符号NH4+—N表示。硫酸铵、氯化铵、碳酸氢铵、液氧、氨水都是铵态氮肥。土壤中的铵态氮可被土壤胶体吸附,呈交换性铵状态氮肥。土壤中的铵氮可被土壤胶体吸附,呈交换性铵状态存在,也可溶解在土壤溶液中,能直接被植物吸收利用,属于速效性氮素。通常土壤中铵态氮的含量为1.4~30mg/kg,在东北黑土中可达50 mg/kg以上。土壤铵态可通过硝化作用而转化为硝态氮,每吸收一个铵离子(NH4+),即产生一个氢离子(H+),形成的氨进入植物体内后与呼吸基质时产生的酮酸化合,生成多种氨基酸和酰胺,并进一步合成蛋白质。因此,正常生育的植物体内不存在游离的铵态氮。铵态氮肥是速效性肥料,可作基肥和追肥用。但由于铵盐中阴离子不同,应根据土壤作物、气候等条件选择适宜的铵态氮肥。如氯化铵,因含有氯离子,不宜用于盐渍土或忌氯作物。

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