
The article deals with the biogeochemical problems of saline, irrigated soils of different levels, the composition and characteristics of biogeochemical barriers formed as a result of the formation of arzyk-shoh, shoh-arzyk horizons in irrigated meadow soils of Central Fergana. The group of radial barriers is defined and divided into two-sided barriers, which are based on the concept of top and bottom, that is, the properties of the upper sides of the layer differ from the properties of its lower parts.