Numerical modeling of the salt-transfer problem in soils Mazhid Yusupov, Raikhan Tazhibayeva, Sholpan Ziyaeva and Kurash Kubyashev E3S Web Conf., 264 (2021) 01005 Published online: 02 June 2021 DOI: 10.1051/e3sconf/202126401005