TY JOUR TI STRUCTURE OF CEREAL-LEGUME HERBALS WITH DIFFERENT METHODS OF SOWING AND IRRIGATION IN ARID CONDITIONS OF THE LOWER VOLGA KW perennial grass mixtures KW scattered sowing method KW sprinkling KW periodic flooding KW drip irrigation JO Vestnik of Kazan State Agrarian University AU Kudryashova, N.I. AU Bulahtina, G.K. AU Kudryashov, A.V. AU Hyupinin, A.A. PY 2022 IS 16 PB Kazan state agrarian University