This study aimed to explore the effect of pine biochar combined with rape on the remediation of lead-contaminated farmland.Different amounts of pine biochar(0,200,400,and 600 g/m 2)were applied to lead-contaminated farmland to improve the soil in Xiangtan County,Hunan P...MORE This study aimed to explore the effect of pine biochar combined with rape on the remediation of lead-contaminated farmland.Different amounts of pine biochar(0,200,400,and 600 g/m 2)were applied to lead-contaminated farmland to improve the soil in Xiangtan County,Hunan Pro...