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- Nitric nitrogen ( NO3-- N ) NO3--N
- Zn and Mo nutrition could also increase protein and nuclear acid contents and NR activity, but decrease nitric nitrogen (NO3-) and free ammonic acids contents (FAA) and RNase activity in leaves. 锌钼营养还可提高叶片蛋白质、核酸含量以及硝酸还原酶(NR)活性,并降低游离氨基酸、NO_3~-含量和核糖核酸酶(RNase)活性。
- Soil NO3--N concentration and accumulation of intercropped faba bean were lower than that of solecropped faba bean at three nitrogen rate. 在3个氮水平下,蚕豆间作土壤硝态氮含量和累积量都低于单作。
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- Relationship Between Nitric Nitrogen Reduction in Leaf and Its Accumulation in Petiole of Spinach 菠菜叶片中硝态氮还原与叶柄中硝态氮累积的关系
- The results showed slow/controlled release fertilizers felted and coated by Nano-materials could improve nitrogen recovery and decrease NO3--N loss effectively. 结果表明,纳米级材料胶结包膜型缓/控释肥料能有效的提高氮素利用率和减少硝态氮的淋溶损失。
- Study on the Method for the Determination of Nitric Nitrogen, Ammoniacal Nitrogen and Total Nitrogen in Plant 植物中硝态氮、氨态氮、总氮测定方法的比较研究
- The results showed that nitrate concentration of false pakchoi was significantly reduced when NO3--N source in nutrition solution was replaced by other nitrogen source. 结果表明 ,营养液中的硝态氮源被其他形态氮源替代后能明显降低菜心的硝态氮含量 ;
- Keywords Urea nitrate;Formol titration method;Analysis of amide nitrogen;Urea nitrate metal complex;Nitric nitrogen; 酰胺态氮的分析;硝态氮的分析;甲醛法;硝脲;硝酸尿素金属络合物;硝酸盐;
- Keywords Plant;Kjeldathl method;Nitric nitrogen;Ammoniacal nitrogen;Total nitrogen; 植物;凯氏法;硝态氮;氨态氮;总氮;
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- Basketball court No3 is in front of that building. 第3篮球场在那栋房的前面。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- The nitric acid changed the cuticle of his mouth to a yellow color. 硝酸将他口腔里的护膜变成了一种黄颜色。
- SummaryThe characteristic of NO3--N accumulation in the soil layer of 40~220 cm with different amounts of nitrogen application was studied by analysis of NO3--N in soil solution collected in a cinnamon soil of the Piedmont Plain of Mt. Taihang. 通过采集土壤溶液并测定其硝态氮(NO3--N),对不同施N处理下40-220cm土层的NO--N累积特征进行了研究。
- DCD also could postpone the acme of NO3--N dynamics, which made soil preserve more NH4+-N in a longer period. Adding DCD could increase the utility efficiency of AB, and decrease its nitrogen losses. DCD同时能推迟NO3--N含量达到高峰,使土壤NH4+-N含量在较长时间保持相对较高水平,提高氮肥利用率,减少氮素流失。
- He fought in the N African campaign during the last war. 在上次战争中他在北非战役参战。
- Design of new No3 BF of Shoudu Iron & Steel Co. 首钢新3号高炉设计
- The univalent radical NO3 or a compound containing it, as a salt or an ester of nitric acid. 硝酸根,硝酸盐(酯)一价的根NO3或包含它的化合物,如一种硝酸盐或者酯