Previous studies have shown that the main causes of development of secondary salinization processes are soil warming, evaporation of groundwater in alluvial, agro-irrigation and lysos rocks, accumulation of easily soluble salts in the surface layers of soils. In some areas the groundwater table is observed at a depth of 2-3 m and more, in the main plains areas about 1-2.0 m, during the vegetation period it rises up to 1 m, the amplitude of seasonal fluctuations reaches 1.0-1.5 m.