| 词汇 | nitrogen-fixation |
| 释义 | nitrogen fixation noun[ U ] chemistry specializeduk /ˈnaɪ.trə.dʒən fɪkˌseɪ.ʃən/ us /ˈnaɪ.trə.dʒən fɪkˌseɪ.ʃən/ the process by which nitrogen from the atmosphere is changed either naturally or in industry into compounds that are used in several processes固氮 Physical & chemical processes absorbable absorptive absorptive capacity absorptivity acidification endothermic reaction excitability excitation excite exergonic exothermic exothermic reaction impregnate reabsorb react reboil recondense redox scald vaporize Examples of nitrogen fixationnitrogen fixation Therefore, nitrogenfixation is unimportant as a source of this element for savanna plants. These hypotheses will be tested as additional genomic, biochemical and geological evidence sheds more light on the evolution of nitrogenfixation, photosynthesis and cyanobacteria. The objective of the present experiment was to assess seed composition and nitrogenfixation under these conditions. Thus, at this point, the phylogenetic and molecular evidence indicate that nitrogenfixation arose before photosynthesis, but more work on this question is needed. The evolution of nitrogenfixation also appears to have been a precondition for the evolution of (bacterio)chlorophyll-based photosynthesis. This model involves the interplay of denitrification, nitrification and nitrogenfixation, but does not explicitly consider the influence of tracemetal availability for requisite enzyme activity. By providing soil cover and nitrogenfixation they not only improve livestock feed but also help prevent soil degradation. These results indicate that brassica residues could affect critical microbial processes, including nitrification, nitrogenfixation and mycorrhizal symbioses. Technologies include nitrogenfixation, biocontrol of pathogens and pests, fermentation, post harvest microbiology and more. Stabilizing agricultural energy needs: role of forages, rotations, and nitrogenfixation. Nitrogenfixation throughout growth, and varietal differences in nitrogenfixation by the rhizosphere of rice planted in pots. Can biological nitrogenfixation sustain agriculture in the tropics? The acetylene reduction assay for measuring nitrogenfixation in waterlogged soil. It appears that nitrogenfixation is more sensitive to infection than nitrogen assimilation. So, for example, several species will typically perform nitrogenfixation functions, but each will perform those functions differently depending upon climatic conditions. See all examples of nitrogen fixation 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. |
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