(i) the influence of biochar parent materials and particle sizes on immobilizing heavy metals in soil and reducing their accumulation in rice plants; and (ii) the effects of these additions on the iron plaque sequestrations of Cd, Zn, Pb and As.
(i) the influence of biocharparent materials and particle sizes on immobilizing heavy metalsin soil and reducing their accumulation in rice plants; and (ii) theeffects of these additions on the iron plaque sequestrations of Cd,Zn, Pb and As.