【摘要】 采用营养液培养的方法,研究EDTA螯合诱导商陆(Phytolacca acinosa Roxb.)及胭脂草(Rivina humilis Linnaeus.)对金属锰污染的吸收修复.结果显示:在生物量方面,12.7 mmol.L-1Mn2++0.9 mmol.L-1EDTA,8 mmol.L-1Mn2++0.5 mmol.L-1EDTA配合处理分别有利于增加商陆、胭脂草干物质的积累.在锰积累量方面,12.7 mmol.L-1Mn2+与适宜EDTA浓度(0.3~0.9 mmol.L-1)配合处理及8 mmol.L-1Mn2+与适宜EDTA浓度(≥0.1 mmol.L-1)配合处理时,能分别提高商陆及胭脂草地上部、地下部和整株锰的含量;增强了胭脂草地上部、地下部和整株富集锰的能力;促进胭脂草中锰从地下部向地上部的转移.更多还原

【Abstract】 The experiment used the method of nutrient solution culture to study the uptake of heavy metal Manganese by Phytolacca acinosa Roxb.and Rivina humilis Linnaeus.during an EDTA-assisted phytoextraction process.Results showed that: in the respect of the biomass,the application of 12.7 mmol·L-1 Mn2+ with 0.9 mmol·L-1 EDTA and 8 mmol·L-1 Mn2+ with 0.5 mmol·L-1 EDTA were respectively beneficial to increase the dry material accumulation in Phytolacca acinosa Roxb. and in Rivina humilis Linnaeus..In the respect of Manganese accumulation,the application of 12.7 mmol·L-1 Mn2+ with appropriate EDTA concentration(0.3-0.9 mmol·L-1 Mn2+),and 8 mmol·L-1 Manganese with appropriate EDTA concentration(≥0.1 mmol·L-1) could respectively increase the grassland of Manganese content and Manganese accumulation in the shoot,the root and the whole plant of Phytolacca acinosa Roxb.and of Rivina humilis Linnaeus.,and could promote the transference of Manganese from the root to the shoot in Rivina humilis Linnaeus..更多还原