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Diffusion du15N2 dans le sol pendant la mesure de fixation biologique de l'azote

15N2 diffusion in soil during biological dinitrogen fixation measurements

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Résumé

La cinétique de diffusion du15N2 est mesurée sur un système identique à ceux pouvant être utilisés pour la mesure de fixation de l'azote chez les associations plantes-microorganismes cultivées sur sol. L'enrichissement homogène de l'atmosphère du sol est obtenu une heure environ après l'injection de15N2 et correspond à l'enrichissement calculé, ce qui indique qu'aucune adsorption n'a lieu dans les particules du sol.

Summary

The kinetic of15N2 diffusion has been measured in a system similar to that for the estimation of N2 fixation in plant microorganism associations cultivated in soil. The15N2 enrichment of the soil atmosphere reached an homogenous value one hour after injection of15N2 and is identical to that obtained by calculation, indicating that no adsorption occurs in the soil particles.

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Authors and Affiliations

  1. Dpt. de Biologie végétale, ERA 848, Université c. Bernard, Lyon, France

    M. P. Fernandez

  2. CEPE L. Emberger, BP 5051, F-34033, Montpellier Cedex, France

    F. R. Warembourg

Authors
  1. M. P. Fernandez
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  2. F. R. Warembourg
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Fernandez, M.P., Warembourg, F.R. Diffusion du15N2 dans le sol pendant la mesure de fixation biologique de l'azote. Plant Soil 73, 431–434 (1983). https://doi.org/10.1007/BF02184321

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  • DOI: https://doi.org/10.1007/BF02184321

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