Abstract

Two types of leaching water with different salinity values (river water and well water) were used, with electrical conductivity values of (1.81 and 10.12) dS/m⁻¹, respectively, and ionic strengths of (0.023 and 0.132) mol L⁻¹, The purpose of studying their effect on the leaching of salts from some salt-affected soils in Babil, with varying soil textures, was to determine the pore size of the soil columns during the experiment. Microsoft Excel was used to plot the intermittent leaching curves for these salt-affected soils. The results showed a clear decrease in soil salinity for all treatments following leaching with water of different ionic strengths. However, the well water treatment was superior to the river water treatment in terms of its content of divalent ions Ca²⁺, Mg²⁺, which are capable of replacing monovalent ions Dispersing soil particles on the surfaces of ion exchange sites, forming aggregates and improving soil structure, The effect of intermittent of leaching water on the release of ions present on the surfaces of ion exchange sites is evident in the figures, where an increase in ion release can be observed continuously by allowing a period for salts to reform and then be released by the used wash water, whether it is well water or river water.