Modélisation de l’impacte de l’irrigation sur le devenir salin et sodique des sols dans le périmètre irrigué de Bouchegouf (W.Guelma)

Abstract

In the last decade, the Bouchegouf region has experienced significant development in agriculture, with a positive effect on the entire regional economy. Nevertheless, this development has generated a high demand on water to meet the needs of agriculture, the use of irrigation is necessary, unfortunately this development has not taken into account are effect on the quality of groundwater and the ground. Large-scale irrigation has altered the soil structure, sometimes leading to a decline in soil fertility and deterioration in quality through the salinization process, as well as the degradation of groundwater through contaminationThe study carried out concerns the quality of surface and groundwater in the Seybouse watershed (average Seybouse, Bouchegouf region), and the impact of irrigation on the salt and sodium evolution of the irrigated perimeter of the soil. Bouchegouf. The aim of this study is to present a simulation model of the movement of salts in Bouchegouf irrigated soils; the SMSS2 software package is a simple model essentially allowing the prediction of the salinity / sodicity of a given soil after its irrigation. For a prolonged period, it was used according to the principle: simulate saline soil irrigation with unsalted water and simulate unsalted soil irrigation with salt water from Seybouse and Mellah.