Our knowledge reveal that in regular, Cr, Cu, and Ni concentrations accrued in root over a focus of twenty mg/kg are negatively correlated with advancement of R. apiculata Ch? nh?t: Kiên Giang, Lâm ??ng, Ti?n Giang K?t qu? XSMN ???c s?p x?p m?c ??nh theo l?ch m? th??ng Anh HLV Pep