Chemical properties of Zarafshon lower and middle flow soils

Abstract

The article describes the chemical composition of newly irrigated, newly developed sandy-desert, old-irrigated alluvial-meadow, newly-irrigated gray-brown-meadow, gray-earth-meadow soils, common in the lower and middle reaches of the Zarafshan River, describes the decrease in the amount of nutrients in the soil under the influence of anthropogenic factors. In arable and subarable layers of old irrigated meadow-alluvial soils, the amount of humus is 0.859-0.971% and 0.715-0.894%, while in newly irrigated gray brown-meadow soils it is 0.891-0.750%. In irrigated and newly developed desert sandy areas, the total amount of nitrogen is 0.052-0.082%, phosphorus - 0.075-0.15%, potassium content - 66-0.916%.