Soil water-salt regime as a factor in improving the reclamation state of irrigated lands

The paper considers improvements in the irrigation regime of the saz zone of the Ferghana Valley by developing reclamation regimes for irrigated lands. As a result of the research, the inflow of groundwater to the massif, the amount of unproductive evaporation of groundwater, the efficiency of drainage and the main factors determining the favorable reclamation state of meadow soils during irrigation were established. The relationship between the hydromorphic regime of soils and the consumption of water resources has been studied. In this work, a quantitative analysis of the processes of transfer of various ions in soils was carried out and a justification was given for the calculation models of salt transfer for meadow soils; It has been shown that under the conditions under consideration, the assessment of the salt regime of irrigated lands must be performed for not only Cl, but also Na, Ca, and Mg ions.