ASSESSMENT OF THE SOIL-RECLAMATION CONDITION OF IRRIGATED LANDS OF TURKESTAN REGION DEPENDING ON THE HYDROCHEMICAL REGIMES OF GROUNDWATER

Abstract

This article presents the results of research to establish the possibility of using collector-drainage waters for irrigation of agricultural crops on irrigated lands of the Turkestan region. The changes in the salt regime of the soil and crop yields depending on the mineralization of irrigation waters were studied. The yield of all tested crops, when irrigated with collector-drainage water with mineralization <5 g /l, did not decrease. The results of the experiments allowed us to come to the conclusion that collector-drainage water with a mineralization of <5 g/l can be used for irrigation of crops in its pure form, with a mineralization of 6-7 g/l of water, CDW irrigation should alternate with fresh water irrigation, and with a mineralization of water > 7 g/l, it must be diluted with fresh water to the permissible limit.