TY JOUR TI INFLUENCE OF IMPROVED TECHNOLOGIES FOR THE CREATION AND USE OF LEGUME-CEREAL GRASS STANDS ON THE YIELD AND FERTILITY OF SOD-PODZOLIC SOIL OF MEADOW HAYFIELDS KW legume-grass hayfields KW productivity KW feed quality KW economic efficiency KW changes in soil fertility JO Adaptive Fodder Production AU Kutuzova, A.A. AU Provornaya, E.E. PY 2023 IS 2023 PB Federal Williams Research Center of Forage Production and Agroecology