%0 Journal Article %T CHERNOZEM HUMUS STATE CHANGE OF THE CHELYABINSK REGION AS AN AGRICULTURAL USE RESULT %A ZAHAROVA, I.A. %A Yumashev, H.S. %K humus state, monitoring of agricultural soils, chernozem soils, natural fertility, fractional-group composition, comparative analysis, organic matter, virgin lands, arable lands %J Bulletin of KSAU %D 2022 %N 0 %P 8 %I Krasnoyarsk State Agrarian University