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Titlebook: Gaseous Loss of Nitrogen from Plant-Soil Systems; J. R. Freney,J. R. Simpson Book 1983 Springer Science+Business Media Dordrecht 1983 evol

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發(fā)表于 2025-3-25 03:55:32 | 只看該作者
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發(fā)表于 2025-3-25 10:05:32 | 只看該作者
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發(fā)表于 2025-3-25 12:27:57 | 只看該作者
Volatilization of ammonia,s presence is readily detectable near barns, stables and feedlots where plant and animal residues are concentrated but it is also formed in many other situations from less concentrated sources, e.g. in fields and forests (Lemon and Van Houtte 1980). It is constantly being formed in soils at rates wh
24#
發(fā)表于 2025-3-25 17:16:10 | 只看該作者
Biological denitrification,echanism of N loss from soil. Since denitrification occurs only in the absence of oxygen, or at particularly low oxygen concentrations, it has been widely accepted as the cause of the poor efficiency of N use in flooded soils, where a well-developed anoxic layer is a characteristic feature (De Datta
25#
發(fā)表于 2025-3-25 21:00:36 | 只看該作者
Chemodenitrification,the soil. It was generally assumed that the important pathways of loss were volatilization of NH., and reduction of nitrate to N.O and N. by soil microorganisms (biological denitrification). There was little direct evidence to support the assumption of significant losses via these pathways, despite
26#
發(fā)表于 2025-3-26 02:45:00 | 只看該作者
The measurement of denitrification,umerous laboratory studies have provided useful information on the factors affecting denitrification in soils but these findings cannot be used to predict the extent of denitrification in the field. In recent years, increased interest in the efficiency of nitrogen (N) use in agriculture and the impa
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