TY JOUR TI Formation of functional blocks of irrigation and drainage systems of a high level of organization KW meliorative systems of a high level of organization KW complex melioration KW system decomposition KW functional blocks KW system management JO Melioration and Water Management AU Kablukov, O.V. AU Semenova, K.S. PY 2022 IS 2021 PB ANO Editorial Board Melioration and water management