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Universidad Católica de Santa María (2019)

Implementación de un Modelo Eficiente de Uso de Agua Destinado Para la Agricultura Basado en Sistemas de Información Geográfica en la Irrigación del Bajo Cural, Arequipa 2018

Quiroz Valdivia, Jonathan Andre

Titre : Implementación de un Modelo Eficiente de Uso de Agua Destinado Para la Agricultura Basado en Sistemas de Información Geográfica en la Irrigación del Bajo Cural, Arequipa 2018

Auteur : Quiroz Valdivia, Jonathan Andre

Université de soutenance : Universidad Católica de Santa María

Grade : Ingeniero Ambiental 2019

Résumé
Irrigations in the province of Arequipa have inadequate management and practices with respect to the amount of water used to irrigate crops, and the absence of appropriate databases for users and water licenses in relation to what is cultivated. In the investigation, volumes of water needed for crops in the irrigation of the Bajo Cural were obtained, this has been made based on the parameters identified in previous technical documents and also in the reference and current evapotranspiration calculations, being able to identify the differences between the effects of both in the volumes of water needed ; To achieve this, information was collected from users, agrarian cadastre, hydraulic infrastructure and meteorological information for August 2017 to July 2018, corresponding to our study time, based on which the reference evapotranspiration was calculated using Penman-Monteith and current evapotranspiration through SEBAL processed by GRASS GIS, this was supported by surveys to farmers in order to recognize in what points the crops were planted and to be able to extract the values of current evapotranspiration, thus obtaining the water demand of the crops, these values were analyzed with the irrigation efficiencies calculated through gauging and finally a database was created that could relate the information ; according to the calculations used with Penman-Monteith, 4485.99 mm would be required, according to SEBAL it is equivalent to 4510.83 and the one corresponding to the current irrigation block license is equivalent to 4739.65 mm, so it has to be estimated that the volumes through SEBAL are more efficient in relation to of those calculated with Penman-Monteith.

Mots clés Penman-Monteith, SEBAL, crop water requirements, geographic information systems.

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Page publiée le 15 novembre 2020