需氮量 的英文怎麼說

中文拼音 [xūdànliáng]
需氮量 英文
nitrogen requirement
  • 需 : Ⅰ動詞（需要） need; want; require Ⅱ名詞1. （需用的東西） necessaries; needs 2. （姓氏） a surname
  • 氮 : 名詞[化學] nitrogen （7號元素, 符號n）
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  1. Since a carbon nucleus is six times more positively charged than a hydrogen nucleus, the cno cycle can only operate at the higher temperature and density provided by the more massive stars

    但因碳原子核帶的電荷是氫原子核的六倍碳氮氧循環需要只有質量大星體所能提供的較高溫度和壓力才能維持。
  2. The calcium products, a variety of elements nitrogen, which is necessary for some nutrients seedling growth can induce root growth seedling vigor, flower, bao lei, 4. 2 peach, rapid calcium, nitrogen and other trace elements that can prevent root blight, fusarium wilt, leaf, blight of rot. weak seedling bud abortion, a potent rotten peach can enhance seedling drought and frost - proof, anti premature senility, anti - std calciprivia plant capacity promotion developed root seedlings seedlings healthy and steady early, squaring focus block chu high boll early, rapid expansion of peach, peach increased weight gain., 1999 chang, the color white lint high, up to 25 to 35 % yield

    本產品含鈣、氮多種元素，是棉苗生長所必需有的養份，能促使棉苗根部生長旺盛，保花、保蕾、膨桃，能快速補鈣、氮等微量元素，可預防根枯病、枯萎病、小葉病、立枯病，對爛根、弱苗、花蕾敗育，爛桃有特效，能提高棉苗抗旱、防凍、抗早衰、抗植物缺鈣性病能力，促進根系發達、苗壯苗健、穩長早發、現蕾集中、座鈴率高、成鈴早、膨桃快、桃增大增重、吐絮暢、色澤白、衣分高，增產可達25 - 35 % 。
  3. To meet the need of grain production, investigations such as property of nutrients uptake of high - yielding wheat, regularity of nutrient requirement of high - yielding maize, proper rate and ratio of npk fertilizers for high yields of wheat and maize, and rational rate and ratio of organic - n to inorganic - n in double cropping system have been conducted by shuming z. and yizhi l. et al. since 1980

    為了滿足糧食生產需要，自1980年以來，張漱茗和劉毅志等人就開始調查高產小麥養分吸收特性、高產玉米養分需求規律、高產小麥和玉米氮磷鉀肥適宜用量和比例、一年兩作制中有機氮和無機氮的合理用量和比例。
  4. The total phosphorus requirement is relative to the potential of soil phosphorus and nitrogen fertilizer application

    總磷需求量與土壤磷潛力和施用氮肥有關。
  5. These tests enable the better management of the crop ' s nitrogen requirement to prevent head sterility and loss of production when excessive amounts of nitrogen fertilizer are applied

    這些測試方法使人們能夠更好地管理作物的氮素需求，以避免過量施用氮肥帶來的稻穗不育及減產。
  6. The ability to reduce application rates through use of crn enables producers to avoid the uneconomical practice of applying fertilizer in excess of soil and crop requirements as insurance against potentially large n losses

    通過用控釋氮肥可以減少施用量，使生產者避免使用超過土壤和作物需要過多的不經濟施肥，避免氮素大量損失。
  7. Abstract : through analysis of properties of the moulds used in aluminium alloy forging products after nitriding process, the significance of moulds nitriding process in massive, medium or small type and high - precision aluminium alloy die forging products is discussed

    文摘:通過對生產鋁合金模鍛件所需模具經過氮化處理后的性能分析，闡述了模具氮化處理在大批量、中小型、高精度鋁合金模鍛件生產中的重要性。
  8. According to the features of naphthenic base oil ( i. e., high nitrogen and low sulfur content ) and based upon theoretical analysis of the h2s concentration needed for phase equilibrium of nickel sulfide and tungsten sulfide in hydrogen, the most economic quantity of sulfiding agent injected into the reactor for supplement of sulfur in lube oil hydrogenation catalysts was obtained

    摘要針對環烷基油高氮、低硫的特點，通過對硫化鎢和硫化鎳在氫氣中相平衡態所需硫化氫濃度的理論分析，對反應器入口所需補硫量作了詳細的闡述，得出了最經濟的補充注硫量。
  9. This course demonstrate the important sorts of wastewater analysis, it includes chemical oxygen demand ( cod ), biochemical oxygen demand ( bod ), suspended solids ( ss ), volatile suspended solids ( vss ), ammonia nitrogen, organic nitrogen, nitrite nitrogen, nitrate nitrogen, orthophosphate, total phosphate, sulfate, and sulfide

    本課程包含污水分析重要項目的原理解說及實驗分析，分析項目包括：化學需氧量、生化需氧量、懸浮固體物、揮發性懸浮固體物、氨氮、有機氮、亞硝酸鹽氮、硝酸鹽氮、正磷酸鹽、總磷、硫酸鹽及硫化物。
  10. A comparative study on nitrogen metabolism and nitrogen requirement for maintenance in roosters and layers fed antibiotic - free diets

    公雞和母雞氮代謝及氮維持需要量的比較研究
  11. In addition, as it is more resistant to diseases and insects and has a low nitrogen requirement, less fertilizer and pesticide will be needed in future

    另外，它亦具有更強的抵抗疾病和蟲害的能力。其氮需量亦相對較低。所以肥料及除蟲劑的使用可在未來加以減少。
  12. Non - photo sensitive varieties responded to high levels of n and required more n for maximum yield

    非光敏品種對高施氮量反應好，其最高產量需要更多的氮。
  13. The problems of carbon source supply and sludge age control could be effectively solved in the processes by means of " one carbon source for two uses " and " two - sludge system ", meanwhile phosphorus and nitrogen can be removed with less oxygen requirements and sludge production

    該工藝以其特有的「一碳兩用」和「雙泥系統」 ，有效解決了常規生物脫氮除磷工藝的碳源供求矛盾和泥齡控制問題，可同時獲得較高的除磷和脫氮效率，並具有所需曝氣量少，剩餘污泥排放量低等特點。
  14. The amount of nitrogen needed will increase as yield increases

    隨著產量增加，需氮量也要增加。
  15. The oxygen content in the vent pipe of the equipment has to be checked for the concentration of o2 to get the required amount of nitrogen

    需要檢查設備放空管線中氧氣的濃度，來確定所需要的氮氣的量。
  16. Low dissolved oxygen can be harmful to most aquatic life, whereas high 5 - day biochemical oxygen demand and ammonia nitrogen levels indicate the presence of organic pollution and sewage contamination

    溶解氧含量過低會危害大部分水生物的生存，而五天生化需氧量和氨氮水平則顯示河溪受有機物和生活污水污染。
  17. The flowering fertilizer will lower the amount of stored nitrogen in the plant and increase the amount of stored carbohydrates necessary for the production of roots

    開花肥會降低植物中貯存氮的量，而增加貯存為了根的生產需要的碳水化合物的量。
  18. The authors have developed a device for measuring the normalized difference vegetation index ( ndvi ) by using four specially designed photoelectric detectors ; the ndvi can reflect the growing information and seasonal nitrogen fertilizer requirement of crops, and offers guidance for rational application of nitrogen fertilization

    文中提出了一種由4個專門設計的光電探測器直接得到歸一化植被指數的測量方法，該參數能夠反映作物的生長狀態，知道不同季節的農作物對氮的需求量，對實施變量精準施肥具有重要的指導作用。
  19. Perhaps, it is necessary for us to prolong experimental time and use more sensitive instrument in order to correctly evalunate soil micro - algae ' s effection to the increment of soil nitrogen. all in all, soil ph value, soil organic matter, soil available phosphorus and soil nitrogen are important indices, which are used to measure soil ' s quality

    （ 5 ）從理論上推測，土壤微藻的固氮作用必然會使土壤全氮量增加，但在90天的實驗期內的增加量尚不可測，可能需要更長的實驗時間和更靈敏的測試方法方可評估土壤微藻對增加土壤全氮量的意義。
  20. Among the elements required by plant, nitrogen is the largest one, and at the same time it is a limited factoring the signal plant. natural ecosystem and artificial ecosystem

    氮素是植物需求量最大的元素，同時是植物個體乃至自然生態系統和人工生態系統中作物生長的限制因子。
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