1)Nitrogen metabolism氮代谢
1.Effect of appling malic acid on nitrogen metabolism of flue-cured tobacco;施用苹果酸对烤烟氮代谢的影响
2.Effect of carboxymethyl chitosan on nitrogen metabolism of rice;不同浓度羧甲基壳聚糖对水稻氮代谢影响研究
3.Effects of application of N and K fertilizers on nitrogen metabolism of two genetype varieties of maize under water-stressed condition;水分胁迫下氮、钾对不同基因型夏玉米氮代谢的影响
英文短句/例句
1.Responses of Nitrogen and Camptothecin Metabolism in Camptotheca Acuminata Seedlings to Different Nitrogen Nutrition;喜树幼苗氮代谢和喜树碱代谢对不同氮素营养的响应
2.Nitrogen Metabolic Characteristics in Rice Genotypes with Different Nitrogen Harvest Index(NHI)不同氮收获指数水稻基因型的氮代谢特征
3.Effects of Nitrogen Rates on Nitrogen Metabolism and Quality Formation of Flue-cured Tobacco;施氮量对烤烟氮代谢及品质形成的影响
4.Effects of Water and Nitrogen Fertilizer on Growth and Nitrogen Metabolism of Maize Seedling;水分—氮素对玉米苗期生长及氮代谢的影响
5.The Effect of Different Nitrogen Sources on Nitrogen Metabolism and Rumen Fermentation in Sheep;不同氮源对绵羊氮代谢和瘤胃发酵的影响
6.Effects of Nitrogen and Irrigation Rate on Nitrogen and Carbon Metabolism and Yield in Winter Wheat;灌溉量和施氮量对小麦碳氮代谢及产量的影响
7.Effects of Mg on C and N Metabolism of Soybean at Different N Levels;不同氮肥用量下镁对大豆碳氮代谢的影响
8.Effects of Nitrogen on the Growth, Quality and Key Enzyme in Nitrogen Metabolism of Chinese Chive;氮素对韭菜生长、品质及氮代谢关键酶的影响
9.Effect of Different Nitrogen Forms and Ratioes on Carbon-Nitrogen Metablism of Flue-Cured Tobacco Leaves;不同氮素形态配比对烤烟叶片碳氮代谢的影响
10.Effect of N Management on C and N Metoblisms and Yield of Soybean;氮素调控对大豆碳氮代谢及产量的影响
11.Study on the Photosynthetic Characteristic and Nitrogen Metabolism in Different Nitrogen Treatment of the Flue-cured Tabacco不同施氮水平下烤烟光合特性和氮代谢的研究
12.Differences of Enzymes Activity Involved in Nitrogen Metabolism in the Nitrogen Efficiency Genotypes of Eggplant不同氮效率茄子氮代谢相关酶活性的差异
13.Effects of Different N and K Levels on Nitrogen Metabolism of Spring Maize氮、钾不同营养水平对春玉米氮代谢的影响
14.Effects of Different Ratios of Nitrogen Forms on Enzyme Activities Related to Nitrogen Metabolism and Growth of Cucumber Seedlings氮素形态对黄瓜幼苗生长及氮代谢酶活性影响
15.Effects of NH_4~+-N/NO_3~--N ratio in applied supplementary fertilizer on nitrogen metabolism,photosynthesis and growth of Isatis indigotica氮素形态对菘蓝氮代谢、光合作用及生长的影响
16.Studies on the Characters of Carbon & Nitrogen Metabolism of Resistance (Tolerance) to Rhizomania in Sugarbeet;甜菜抗（耐）丛根病碳氮代谢特性的研究
17.Characteristics and Regulation of Carbon and Nitrogen Metabolism in Aphanizomenon Flos-aquae;水华束丝藻碳氮代谢特征及相互作用
18.The Changes of Carbon and Nitrogen Metabolism in The Process of the Differentiation of Flower Bud of Radish萝卜花芽分化过程中碳-氮代谢的变化
相关短句/例句
nitrogen metabolism氮素代谢
1.Effects of exogenous Ca~(2+) on nitrogen metabolism in wheat seedlings;外源钙离子对小麦幼苗氮素代谢的影响
2.Effect of two diphenylethers herbicides on growth and nitrogen metabolism of peanut at the seedling stage;两种二苯醚类除草剂对花生苗期生长发育及氮素代谢的影响
3.Effects of doubled atmospheric CO_2 concentration on nitrogen metabolism of tra nsgenic Bt cotton under different nitrogen fertilization levels.不同氮素水平下CO_2倍增对转Bt棉花氮素代谢的影响
3)Metabolism of nitrogen source氮源代谢
4)Nitrogen and energy metabolism氮能代谢
5)carbon and nitrogen metabolism碳氮代谢
1.Effects of interaction of photoperiod and nitrogen on activities of enzymes of carbon and nitrogen metabolism of Huanong No.1 ensilage corn;光周期与氮肥互作对华农1号青饲玉米碳氮代谢相关酶的影响
2.Effects of applying indole-3-acetic acid (IAA) and potassium on carbon and nitrogen metabolism of flue-cured tobacco after topping;打顶后施用生长素(IAA)和钾肥对烤烟碳氮代谢的影响
3.Effect of zinc and boron nutrition on carbon and nitrogen metabolism in leaf of balsam pear (Momordica charantia);锌硼营养对苦瓜叶片碳氮代谢的影响
6)Carbon-nitrogen metabolism碳氮代谢
1.Effect of nitrogen supply on carbon-nitrogen metabolism and kernel set in summer maize;施氮对夏玉米碳氮代谢及穗粒形成的影响
2.The effect of different nitrogen forms on key enzyme activity in carbon-nitrogen metabolism and chemical composition of flue-cured tobacco leaves;不同氮素形态对烤烟叶片碳氮代谢关键酶活性及化学成分的影响
3.Influence of nitrogen fertilizer rate on carbon-nitrogen metabolism and nitrogen use efficiency of summer maize under high and medium yield levels施氮量对不同肥力水平下夏玉米碳氮代谢及氮素利用率的影响
延伸阅读
氮素代谢氮素代谢 nitrogen metabolism氮素及含氮的活体物质的同化、异化和排泄，总称为氮素代谢。植物一般吸收氨盐或硝酸盐等无机氮化合物，硝酸盐要一经被还原为氨盐或至与氨盐有关的阶段之后，便用于氨基酸和蛋白质的合成。相反，动物只能用氨基酸或蛋白质等有机氮化合物作为氮源，否则就不能利用。动物以体内吸收的氨基酸等为素材，合成本身固有的蛋白质。这种把外界的氮素成分变成生物体的构成物质的过程，称为氮素同化。可是对植物来说，正像叶面喷洒尿素所看到的那样，它们并不是没有利用有机氮的能力。细菌等大部分微生物也能利用化合态氮素，但也有的能固定游离氮素。植物把硝酸盐还原成为氨盐过程的最初阶段，是靠硝酸还原酶的作用。a．nason和h．j．evans等人已经阐明这种酶含有mo和fad。这种酶在真菌类（链孢霉等）中也有所发现。可是在这些真菌类的硝酸还原中却存在有另外一种机制，硝酸还原的生理意义，除了作为蛋白质的合成途径外，还起着一种无氧呼吸（硝酸呼吸，即以硝酸代替氧，形成末端电子受体）的作用。有些细菌并不把硝酸还原成为氨以氮素形态释放出来，而是表现脱氮作用，另外，同样在土壤中，有些细菌也能把氨盐或亚硝酸盐氧化成为硝酸盐而进行硝化作用（硝化细菌）。由氨到氨基酸的合成途径是由谷氨酸脱氢酶把氨与α-酮戊二酸进行还原而生成谷氨酸。一般认为这是由氨到氨基酸生成的主要途径，由谷氨酰胺合成酶与谷氨酸合成酶把氨合成为谷氨酸的生成途径也已经明确。如进而在生成的谷氨酸与丙酮酸间进行氨基转移，就可生成各种氨基酸。另一方面，氨基酸在生物体内也因受到水解和氧化还原所进行的脱氨基反应而被分解。某些厌氧性细菌就能在两种氨基酸之间进行相互的氧化还原（stickland′s reaction）。细菌尤其是腐败细菌能使氨基酸脱羧而生成胺。氨基酸因脱氨基分解生成的氨，在植物以谷氨酰胺或天冬酰氨的形态积存于体内，动物则以氨或转化成为尿酸、尿素排出体外。
