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首页> 外文期刊>Plant and Soil >Nitrous oxide production, its source and distribution in urine patches on grassland on peat soil.
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Nitrous oxide production, its source and distribution in urine patches on grassland on peat soil.

机译：一氧化二氮的产生，来源和分布在泥炭土草地上的尿片中。

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In field trials in 1994 on grassland on a peat soil in the Netherlands, artificial urine was applied in elongated patches of 4.5 m. Four lateral zones were distinguished and sampled for four weeks using an intact soil core incubation method. Incubation of soil cores took place without any additions to the headspace to determine total N2O production, with acetylene addition to determine total denitrification (N2O + N2), and with methyl fluoride to determine the N2O produced through denitrification.Nitrous oxide production was greatest in the centre and decreased towards the edge of the patch. Maximum N2O production was about 50 mg N m-2 day-1 and maximum denitrification activity was 70 mg N m-2 day-1. Nitrification was the main N2O producing process. Nitrous oxide production through denitrification was only of significance when denitrification activity was high. Total N loss through nitrification and denitrification over 31 days was 4.1 g N per patch which was 2.2% of the total applied urine-N.
机译：1994年，在荷兰泥炭土的草地上进行的田间试验中，在4.5 m的细长块中施用了人造尿。使用完整的土壤核心孵育方法，区分了四个侧区并采样了四个星期。在不增加顶部空间的情况下进行土壤核心温育，以确定总的N2O产量，通过添加乙炔确定总的反硝化作用（N2O + N2），并使用氟化甲酰胺确定通过反硝化作用产生的N2O。居中并朝着贴片的边缘减小。 N2O的最大产量约为50 mg N m-2 day-1，最大反硝化活性为70 mg N m-2 day-1。硝化作用是N2O的主要生产过程。仅当反硝化活性高时，通过反硝化生产一氧化二氮才有意义。每个贴片在31天之内通过硝化和反硝化作用损失的总氮为4.1克氮，占尿液总施氮量的2.2％。

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