Aventurier Alain, Fallavier Paul, Ducloux J., Guero Yadji, Valet Serge. 1992. Cation exchange isotherms applied to the study of salt affected-irrigated soils. Montpellier : CIRAD-GERDAT, 13 p.
Autre titre : Isothermes d'échanges de cations appliquées à l'étude de sels affectés-sols irrigués
Résumé : The sodium adsorption ratio (SAR) is usefull to predict the status of waters and soils. It depends on the understanding of ion exchange. This paper shows that the practicle use of isotherm systems on square diagrams makes ion exchange study easier. The experimental curves obtained are expressed with the mathematical model proposed by Laï and Jurinak. It is pointed out that these experimental curves allow a correct representation of parameters involved in exchange process. They also give a theoritical basis to predict cation exchange isotherm at different intermediate concentration. This theory was applied to a "soil-irrigated water" system from Niger. The evolution of SAR could be proceeded when irrigation water was evaporated.
Mots-clés Agrovoc : sol irrigué, sol salin, capacité d'échange ionique, sodium, modèle de simulation
Mots-clés géographiques Agrovoc : Niger
Mots-clés complémentaires : Isotherme de sorption
Classification Agris : P33 - Chimie et physique du sol
Auteurs et affiliations
- Aventurier Alain
- Fallavier Paul
- Ducloux J.
- Guero Yadji
- Valet Serge
Autres liens de la publication
Source : Cirad - Agritrop (https://agritrop.cirad.fr/308890/)
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