龙葵修复不同浓度土壤镉污染研究  

Remediation of Cadmium Pollution in Different Concentrations of Soil by Solanum nigrum L.

作　　者：韩飞 邹光得 晋方学 陆旭东 岳志强 熊明月 杨云 毕佳慧 徐锐[1] 黄晶心 HAN Fei;ZOU Guangde;JIN Fangxue;LU Xudong;YUE Zhiqiang;XIONG Mingyue;YANG Yun;BI Jiahui;XU Rui;HUANG Jingxin(School of Energy and Environmental Science,Yunnan Normal University,Kunming 650500,China;Zhenxiong County Agriculture and Rural Bureau,Zhenxiong 657200,China;Zhenxiong Rural Energy Construction and Agricultural Environment Station,Zhenxiong 657200,China;Yuxi Agricultural Environmental Protection and Rural Energy Station,Yuxi 653100,China;Wenshan Academy of Agricultural Sciences,Wenshan 663099,China)

机构地区：[1]云南师范大学能源与环境科学学院,云南昆明650500 [2]镇雄县农业农村局,云南镇雄657200 [3]镇雄县农村能源建设与农业环境工作站,云南镇雄657200 [4]玉溪市农业环境保护和农村能源工作站,云南玉溪653100 [5]文山州农业科学院,云南文山663099

出　　处：《云南师范大学学报（自然科学版）》2023年第1期74-78,共5页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(31800443);云南省大学生创新创业训练计划资助项目(202110681008,S202110681027,S202110681058X,S202110681036X);云南师范大学大学生科研训练基金资助项目(KX2021042);云南师范大学研究生科研创新基金资助项目(YJSJJ22-A15)。

摘　　要：通过温室试验,设置不同浓度镉(Cd)处理(0、20、40、80 mg/kg和160 mg/kg),研究龙葵(Solanum nigrum L.)对不同浓度Cd的富集特征和修复性能.结果表明:龙葵对Cd具有较强的耐受性,株高随Cd浓度的增加先升高后降低,生物量无明显变化;龙葵对Cd的富集量随Cd胁迫浓度增大而增加,且主要分布在地上部;不同处理龙葵的富集系数、转运系数和Cd去除率均随处理浓度的提高呈先上升后下降的趋势,在土壤总Cd含量为20 mg/kg时均达到最大.可知,龙葵对土壤Cd污染具有良好的耐受性和吸收、富集能力,对低浓度的Cd污染土壤修复效果较好.A greenhouse experiment was conducted to investigate the enrichment characteristics and remediation performance of Solanum nigrum L.with different concentrations of cadmium(Cd)(0,20,40,80 mg/kg and 160 mg/kg).The results showed that S.nigrum had strong tolerance to Cd.The plant height first increased and then decreased with the increase of Cd concentration,but the biomass did not change significantly.The enrichment of Cd in S.nigrum increased with the increase of Cd stress concentration,and mainly distributed in shoot.The enrichment coefficient,transport coefficient and Cd removal rate of S.nigrum under different treatments increased first and then decreased with the increase of treatment concentration,and reached the maximum when the total soil Cd was 20 mg/kg.In conclusion,Solanum nigrum L.has good tolerance,absorption and enrichment ability to soil Cd pollution,and has a good remediation effect on soil with low concentration of Cd pollution.

关 键 词：土壤CD污染 植物修复 龙葵 

分 类 号：X53[环境科学与工程—环境工程]