TY JOUR TI Optimization of the irrigation regime of agricultural crops for different areas of the Saratov region KW irrigation KW soil KW water availability of crops KW irrigation mode KW optimization of water regime KW irrigating norm JO Melioration and Water Management AU Shadskikh, V.A. AU Kizhaeva, V.E. AU Rasskazova, O.L. PY 2020 IS 2019 PB ANO Editorial Board Melioration and water management