| 词汇 | nitrification |
| 释义 | nitrification noun[ U ] chemistry, biology specializeduk /ˌnaɪ.trɪ.fɪˈkeɪ.ʃən/ us /ˌnaɪ.trə.fəˈkeɪ.ʃən/ the process in which bacteria in the soil use oxygen to change compounds of nitrogen in dead plant material into nitrates which plants can then absorb as food硝化作用（土壤中的细菌利用氧气，将植物腐殖质中的含氮化合物转化成可被吸收的硝酸盐的过程） Physical & chemical processes absorbable absorptive absorptive capacity absorptivity acidification endothermic reaction excitability excitation excite exergonic exothermic exothermic reaction impregnate re-emit reabsorb react reboil recondense scald vaporize Examples of nitrificationnitrification Microbial immobilization of ammonium and nitrate in relation to ammonification and nitrification rates in organic and conventional cropping systems. Cold storage of a tropical soil decreases nitrification potential. This model involves the interplay of denitrification, nitrification and nitrogen fixation, but does not explicitly consider the influence of tracemetal availability for requisite enzyme activity. These results indicate that brassica residues could affect critical microbial processes, including nitrification, nitrogen fixation and mycorrhizal symbioses. Effects of urease and nitrification inhibitors application on urea fate in soil and nitrate accumulation in lettuce. Nitrification and denitrification were found to occur under all oxygen-enriched conditions. Practical manipulation of the process of nitrification under field conditions has been demonstrated using a range of nitrification inhibitors. Nitrification in soils with added calcium tended to be greater than in the control, but the difference was not statistically significant. In contrast, a decrease in soil water content from 35 to 25% (with or without increments in soil temperature) had increased mineralization and nitrification. Thus, the method determines only net rates, not gross rates of mineralization and nitrification. When samples were incubated under different water and temperature treatments, rates of nitrogen mineralization and nitrification increased more with changes in soil water content than with changes in temperature. When samples were incubated under different water and temperature treatments, rates of nitrogen mineralization and nitrification increased more with reduction in soil water content than with increases in temperature. Nitrate was higher in samples collected during the afternoon than during the morning, probably as a result of leaching during the night or nitrification during the day. Urease inhibitors are used to slow the hydrolytic conversion of urea into ammonia, which is prone to evaporation as well as nitrification. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Degradation of ammonia to nitrite is usually the rate limiting step of nitrification. 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. |
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