Effects of the Combined Application of Chinese Milk Vetch (Astragalus sinicus L.) and Red Mud to Remediate the Cadmium-Polluted Acidic Paddy Soil

In this study, we conducted field experiments to assess the effects of combined application Chinese milk vetch (Astragalus sinicus L., CMV) and red mud (RM) remediate cadmium-polluted acidic paddy soil. The results showed that increased yield component index improved grain yields, compared with control, RM1, RM2, CMV treatments. However, range soil pH values in CMV-RM1 CMV-RM2 treatments was smaller than RM1 RM2 at different rice growth stages. organic matter (SOM) contents RM-only did not differ throughout whole period, but were significantly (p < 0.05) between control. Compared decreased concentration exchangeable Cd early RM substantially uptake Cd. found no significant difference Therefore, remediation or alone, recommend as an economical, highly effective, replicable amendment for remediating acidic, Cd-polluted Considering restorative effect proper use RM, treatment.