TY JOUR TI COMPOSITION AND PROPERTIES OF AGRODERN-PODZOLIC SOILS OF THE PRE-URAL PROVINCE OF THE FOREST-STEPPE ZONE KW statistical parameters KW morphological structure KW granulometric composition KW humus content KW humus reserves KW sum of absorbed bases KW agrodernum-podzolic soils JO Agrobiotechnologies and digital farming AU Gaffarova, L.G. AU Ahrarova, A.S. AU Belyaev, S.M. PY 2022 IS 1 PB Kazan state agrarian University