Repair effect of rapeseed,Solanum nigrum and ramie on farmland soil contaminated by cadmium and arsenic
Taking rapeseed,Solanum nigrum,and ramie as test materials,the adsorption and enrichment of Cd and As in cultivated soil by rapeseed,Solanum nigrum and ramie were studied in pot experiment.Two microorganisms,Rhodopseudomonas palustris and Aspergillus niger,were applied to explore the application potential of rapeseed,Solanum nigrum and ramie to purify heavy metals pol-luted soil.The results showed that rapeseed and Solanum nigrum had better adsorption effects on Cd in soil,showing enrichment char-acteristics,while ramie plants had a poor absorption effect on Cd.The order of Cd content in rapeseed plants was:stem>root>seed,and the order of Cd content in Solanum nigrum plants was:stem>fruit>root.The adsorption effect of rapeseed,Solanum nigrum and ra-mie on As in soil was poor.Rhodopseudomonas palustris and Aspergillus niger had little effect on the absorption of Cd and As in the soil by rapeseed,Solanum nigrum and ramie.Rapeseed was more suitable as a remediation plant for polluted soil by Cd.
万方数据
维普
