1) transports
铵态氮运移
1.
Experimentation study on transports and distribution characteristic of without restrict fertile solution infiltration under film hole irrigation;
膜孔肥液自由入渗土壤铵态氮运移和分布特性试验研究
2) nitrate transport
硝态氮运移
1.
In this study,an inverse method was applied to solve the nitrate transport equation(convection-dispersion equation,CDE) iteratively to estimate the average distribution of source-sink term in CDE,then the estimated average distribution of source-sink term in CDE was used to optimize the parameter in root-nitrogen-uptake model,i.
应用反求方法通过迭代求解硝态氮运移方程(CDE方程)来估算其源汇项的平均分布,并进一步优化获得源汇项中难以直接测定的参数——根系吸氮因子,从而建立了室内砂培土柱实验中冬小麦的根系吸氮模型。
3) 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
4) 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。
5) ammonium
[英][ə'məuniəm] [美][ə'monɪəm]
铵态氮
1.
Effect of Controlled Release Blend Bulk Fertilizers on the Soil Ammonium and Nitrate Nitrogen Content during the Growing Season of Peanut;
控释掺混肥对花生生育期间剖面土壤铵态氮和硝态氮含量变化的影响
2.
Uptake of ammonium and nitrate by external hyphae of arbuscular mycorrhizal fungi
丛枝菌根根外菌丝对铵态氮和硝态氮吸收能力的比较
3.
Laboratory experiments were conducted to study the effects of fertigation strategies on water and nitrogen distribution from a surface point source of ammonium nitrate.
以一种砂粒含量高达95%的砂土为对象,开展了滴灌施肥灌溉条件下,灌水器流量、灌水量和系统运行方式对水分、硝态氮和铵态氮分布影响的室内试验。
6) ammonium-N
铵态氮
1.
During the different cultural period, the concentration of ammonium-N and COD were determined.
01mol/L)的条件下对各菌株进行连续培养10 d后发现,随着各供试菌株生长量的增加,培养基中铵态氮和COD的含量均有明显下降。
2.
The concentrate of ammonium-N fluctuated in soil surfaceand decrease as the delay of soil drying.
土表的铵态氮也呈波动变化,随着烤田时间的增加铵态氮含量降低。
3.
The effects of two major inorganic nitrogen forms (ammonium-N and nitrate-N) on plant growth and quality,plant mineral element composition, and plant enzyme activity, as well as interaction between nitrate and ammonium were reviewed in this paper.
就两种主要无机氮源——铵态氮和硝态氮对植物生长和品质的影响,对植物矿质元素的组成、植物酶活性的影响及其在相互作用关系等方面的最新进展作了综述,并对有机氮在有机农业和绿色食品中应用前景作了展望。
补充资料：铵态氮
分子式：
CAS号：
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。
CAS号：
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。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条