TY JOUR TI WHEAT PRODUCTIVITY ON THE SOIL BIOLOGICAL ACTIVITY BACKGROUND IN CROP ROTATIONS AND MONOSOWNING UNDER THE SOUTHERN URALS CONDITIONS KW crop rotation KW spring soft wheat KW soil biological activity KW nitrate nitrogen KW monosowing KW predecessor JO Bulletin of KSAU AU Skorokhodov, V.Y. PY 2022 IS 0 PB Krasnoyarsk State Agrarian University