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<i>Nitrification-denitrification loss of</i><sup>15</sup><i>N</i>-<i>labelled ammonium estimated by direct measurement of</i>(<i>N</i><sub>2</sub><i>O</i>+<i>N</i><sub>2</sub>)-<sup>15</sup><i>N fluxes</i>

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摘要

As shown in Tables 1 and 2, for all the ammonium treatments in the 2 experiments the nitrification-denitrification loss as fluxes of(N2O+N2)-15N was very low(tr. -0.3% of added 15N). From the high denitrifying activity in the rhizosphere and nonrhizosphere soils mentioned above, it seems reasonable