Using of rain water into leaching of saline soil and description that by first order equation

Abstract

using of First order Equation to discreb the Leaching process of saline soil by rain water .so the rain efficiency of leaching had been examined in these area had desert climate for tow seasons. however appearance of the intensity of leached ion was: HCO3- SO4= < K+ < Mg++ < Ca++ < Na+ < Cl- The Leaching efficiency was 86% with Leaching requirement L.R was 0.071 m.m . also The mean of result coefficient( Kd ) were reached on 0.0142 per minute with mean of Correlation factors ( r = 0.96 ) . then ,The Release Salts quantity of area unit 81.8 kg . Dunum per Hour and estimate mean of precipitation for leaching this soil to remove salts from roots zone.