| 词汇 | nitrogen |
| 释义 | nitrogen noun[ U ] uk /ˈnaɪ.trə.dʒən/ us /ˈnaɪ.trə.dʒən/(symbolN) a chemical element that is a gas with no colour or taste, forms most of the earth's atmosphere, and is a part of all living things氮（气） Chemical elements actinium alkali metal americium astatine berkelium brimstone bromine calcium fluorine germanium iodine lithium manganese nickel plutonium quicksilver selenium silicon sodium transition metal A plant doesn’t know whether the nitrogen it receives comes from manure or is artificial. nitrogen | American Dictionarynitrogen noun[ U ] us/ˈnɑɪ·trə·dʒən/ biology, chemistry a gas, one of the chemical elements, that has no color or taste, is a part of all living things, and forms about 78 percent of the earth’s atmosphere (= mixture of gases surrounding it) Examples of nitrogennitrogen These algal mats are said to be rich in phosphates, nitrogen, organic matter, and cation-exchange capacity. The high nutritional quality of the detrital organic matter in our study stream may result from grazing by tadpoles which enhances nitrogen fluxes. Is the productivity of organic farms restricted by supply of available nitrogen? Utilizing the nitrogen content of organic manures on farms-problems and practical solutions. Decline in soil organic carbon and total nitrogen in relation to tillage, stubble management and rotation. In addition, we recovered other embryos after storage of up to 18 months in liquid nitrogen to provide information on mutation during storage. Optimizing time distribution of water supply and fertilizer nitrogen rates in relation to targeted wheat yield. Real-time measures of canopy size as a basis for spatially varying nitrogen applications to winter wheat sown at different seed rates. The small sample size used may not have been representative of the actual levels of soil nitrogen or large enough to resolve differences between farms. The soil nutrients that normally pose the most important limitations to agricultural productivity are phosphorus and nitrogen. As a result, later research focused on psychrotolerant cyanobacteria capable of utilizing atmospheric nitrogen. These hypotheses will be tested as additional genomic, biochemical and geological evidence sheds more light on the evolution of nitrogen fixation, photosynthesis and cyanobacteria. Understanding the planetary nitrogen cycle is critical to understanding the origin and evolution of life. Response of maize to three planting densities at four level of nitrogen fertiliser application. However, by reducing the potential for surface runoff loss, the release of nitrogen available for plant use is also delayed. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Collocations withnitrogennitrogenThese are words often used in combination with nitrogen. Click on a collocation to see more examples of it. amount of nitrogen Measurement of amountofnitrogen fixed by a legume crop. atmospheric nitrogen As a result, later research focused on psychrotolerant cyanobacteria capable of utilizing atmosphericnitrogen. excess nitrogen Being practically neutral and highly soluble in water, urea is a safe vehicle for the body to transport and excrete excessnitrogen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. See all collocations with nitrogen |
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