TY JOUR TI CULTIVATION OF AGRICULTURAL CROPS IN THE TYUMEN REGION KW annual grasses KW spring wheat KW crop rotation KW basic tillage KW tillage techniques KW yield KW yield of grain units KW yield of feed units. JO Bulletin of KSAU AU Rzaeva, V.V. PY 2021 IS 0 PB Krasnoyarsk State Agrarian University