Substantiation of reclamation regimes of irrigated lands in the saz zone of the Fergana Valley

Abstract

The paper considers the improvement of the irrigation regime for the saz (unsalted water situated near to under earth) zone of the Fergana Valley by developing reclamation regimes for irrigated lands. As a result of the research, the inflow of groundwater to the massive, 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 investigatedIn work, a quantitative analysis of the processes of transfer of various ions in soils is carried out, and the substantiation of calculation models of salt transfer for meadow soils is given; it is shown that under the conditions under consideration, the assessment of the salt regime of irrigated lands must be performed using not only Cl ions, but also Na, Ca, and Mg ions.