Isolation sources of micro and macro elements among connection rice samples the creation of drought-resistant formsYu. K. Goncharova, O.A. Braginа, E.M. Kharitonov, S.V. Goncharov and N.A. OchkasE3S Web Conf., 262 (2021) 03008DOI: https://doi.org/10.1051/e3sconf/202126203008