SUGʻORILADIGAN BOʻZ - OʻTLOQI TUPROQLARNING AGROKIMYOVIY XOSSALARI VA SANOAT CHIQINDILARI TA’SIRIDA OGʻIR METALLAR BILAN IFLOSLANISHI

This article highlights the agrochemical properties of irrigated gray-earth meadow soils of Sharaf Rashidovsky district of the Jizzakh Free Economic Zone (JEZ), reserves of humus, total nitrogen, total phosphorus, and potassium. There is a high probability of heavy metal pollution in the region near industrial zones, free economic zones, and irrigation networks. Since these soils have a relatively humic layer, as well as a unique water-retaining structure, heavy metals can accumulate in the soil and negatively affect its agrochemical properties. Heavy metals adhere to soil colloids and retain their activity in the soil for a long time. In the soil under study, the lead content of Pb is 40-80 mg/kg (the norm is 32 mg/kg or more), cadmium CD is 0.5 - 2.0 mg/kg (the norm is 0.5 mg/kg or more), zinc Zn is 150-220 mg/kg (the norm is 100 mg/kg or more). This situation indicates an increase in the level of pollution combined with salinization and carbonate content of irrigated gray-earth meadow soils.

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