ZARAFSHON VOHASI TUPROQLARIDA MAKRO VA MIKROELEMENTLARNING TARQALISHI HAMDA ULARGA TABIIY VA ANTROPOGEN OMILLARNING TA’SIRI

This article analyzes the quantitative composition and distribution of macro- (N, P, K, Ca) and microelements in the soils of Uzbekistan, as well as the natural and anthropogenic factors influencing them. The experimental material was a genetic analysis of soil samples taken from the profile of irrigated soils in the middle reaches of the Zarafshan River, Bulungur District. The study determined the soil reaction (pH), electrical conductivity (EC), total alkalinity, chloride content, exchangeable cations, and key plant nutrition parameters—nitrogen in the form of ammonium, and the amount of mobile P2O5 and K2O. The results showed that pH ranged from 7.04 to 7.78, and EC ranged from 353 to 552. The content of nitrogen in the form of ammonium was 8.27–37.90 mg/kg, P2O5 was 7.99–20.18 mg/kg, and K2O was about 164–310 mg/kg.

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