A short-term reservoir operation model for multicrop irrigation
نویسندگان
چکیده
An integrated model is developed for short-term yearly reservoir operation for irrigation of multiple crops. The model optimizes a measure of annual crop production, starting from the current period in real time. Reservoir storage at the beginning of a period, inflow during the previous period, crop soil moisture values and crop production already achieved up to the beginning of the period are used as inputs to the model. The solution specifies the reservoir release and optimal irrigation allocations to individual crops during an intra-seasonal period. The model overcomes some of the limitations of an earlier model developed by Mujumdar & Ramesh (1997) by replacing the two dynamic programming (DP) formulations with a single linear programming (LP) formulation. Application of the model is studied through a case study in India. Un modèle de gestion à court terme d'un réservoir pour l'irrigation de cultures multiples Résumé Dans ce papier on présente un modèle intégré développé pour la gestion à court terme d'un réservoir destiné à l'irrigation de cultures multiples. Le modèle optimize une mesure de la production annuelle, partant du moment courant. Les entrées du modèle sont le stock d'eau emmagasiné au début de la période considérée, l'apport au cours de la période précédente, l'humidité des sols et la production réalisée jusqu'au début de la période. La solution indique la lâchure devant être réalisée et l'allocation optimale à chaque culture pour la période courante. Le modèle surmonte un certain nombre de limites d'un modèle précédemment développé par Mujumdar & Ramesh (1997) en remplaçant deux formulations antérieures par un programme linéaire unique. Une étude de cas en Inde a permis d'étudier l'application du modèle.
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