Agroecological efficiency of periodic use of neutralized phosphogypsum in rice cropsMaria Vizirskaya, Ashad Sheydgen, Natalia Akanova, Vasilii Zhdanov, Maria Tihonova and Alexey BuzylevE3S Web Conf., 175 (2020) 07004DOI: https://doi.org/10.1051/e3sconf/202017507004