Fundamentals of hydraulic calculations of water softening structures in drip irrigation technology (in case of Zarafshan river)A. A. Yangiev, K. Salyamova, G. Omarova, D. S. Adjimuratov, Sh. N. Azizov and B. SerikkhanovE3S Web of Conf., 401 (2023) 01026DOI: https://doi.org/10.1051/e3sconf/202340101026