CAJ | 학술논문

采用盆栽法研究用锰超富集植物美洲商陆(Phytolacca americana)修复锰尾渣污染土壤对后茬植物大豆(Glycine max)和绿豆(Phaseolus radiatus)的影响.经美洲商陆修复锰尾渣污染土壤后,后茬植物大豆和绿豆的镉、铅、锌和锰含量降低,污染土壤的毒性减弱,有利于这2种植物生长.经美洲商陆修复2～3 a,可显著减弱污染土壤对大豆的毒性.由此可见,在经美洲商陆修复的污染土壤上栽培大豆,可以增加含氮量,促进其他植物生长,从而维持锰尾渣污染区植被持续发展.
채용분재법연구용맹초부집식물미주상륙(Phytolacca americana)수복맹미사오염토양대후치식물대두(Glycine max)화록두(Phaseolus radiatus)적영향.경미주상륙수복맹미사오염토양후,후치식물대두화록두적력、연、자화맹함량강저,오염토양적독성감약,유리우저2충식물생장.경미주상륙수복2～3 a,가현저감약오염토양대대두적독성.유차가견,재경미주상륙수복적오염토양상재배대두,가이증가함담량,촉진기타식물생장,종이유지맹미사오염구식피지속발전.
Removing heavy metals or reducing metal concentrations in heavy metal-contaminated soils by hyperaccumulating plants has been proposed as one of the most promising green remediation techniques.Effects of phytoremediation of heavy metal-contaminated soils on following plants have rarely been investigated.A pot experiment was carried out to investigate effects of phytoremediation by manganese hyperaccumulating plants,Phytolacca americana,on phytotoxicity of a manganese mine tailings contaminated soil and metal accumulation of following plants Glycine max and Phaseolus radiatus therein.The soil in pots was planted first with P.americana seedlings,which were removed after one,two or three years and recorded as T-1,T-2,and T-3,respectively.The soil not planted with P.americana served as control.Then seeds of G.max and P.radiatus were sown into those pots.Phytotoxicity of the soil in the pots treated with P.americana became lower compared with that of the control.Phytoremediation of the contaminated soils decreased concentrations of Cd,Pb,Zn and Mn in the biomass of the two plants,G.max and P.radiatus,which promoted their growth.Phytotoxicity of the soil in the pots treated with P.americana was lower to G.max than to P.radiatus.In order to maintain a long-term sustainable vegetation on lands contaminated by manganese mine tailings,herbaceous legume such as G.max can be used to solve the problem of nitrogen deficiency in soils following 2-3 years of phytoremediation with P.americana.