关键词: 烘烤工艺, 烘烤工艺, 上部叶, K326

Abstract: Heavy metal pollution of soil has been increasingly serious environmental concerns in China. To extract heavy metal lead (Pb) from contaminated soil by phytoremediation technology, a pot experiment was developed with 20 plants grown in soils at different concentrations of Pb. The survival rate, growth as well as Pb accumulated in different organs of 20 plants were measured. The results showed that: Sedum tatarinowii, Ailanthus altissima ‘Qiantou’, Rosa multiflora, Forsythia ‘Goldvein’, Broussonetia papyrifera Vent. and Catalpa bignonioides ‘Aurea’ could be classified as Pb-accumulated plants as the Pb contents in their above-ground parts were 11.87-164.502 mg/kg. Amorpha fruticosa, Populus×euramericana cv. ‘74/76’, Platanus acerifolia and Salix babylonica L. Sp were not Pb-accumulated plants as no Pb in their above-ground parts. The Pb-transfer ratio of Rosa multiflora and Sedum tatarinowii was much higher than other tested materials. Pb content in under-ground parts of Populus×euramericana cv. ‘74/76’ reached 3160.85 mg/kg. And it had much higher biomass among tested materials. It could fix and eliminate Pb in Pb-polluted soils as other Pb-accumulated plants mentioned above.