Abstract
In order to find the optimum planting pattern for phytoremediation of metal‐accumulating plants in heavy metal‐contaminated soils, Pennisetum sinese and Lolium perenne were intercropped or monocultured, and the plant leaf physiological indexes as well as the heavy metal contents and accumulation of the two plants were determined. The contents, accumulation, and bioconcentration of Pb, Cd, Cu, and Zn in different parts of the two plants under the intercropping method were significantly (p < 0.05) higher than those under the monoculture method. The average accumulation amounts of Pb, Cd, Cu, and Zn in P. sinese under the intercropping method are 29.51, 19.60, 182.8, and 178.2 μg/plant in leaves; 8.89, 17.99, 61.68, and 205.4 μg/plant in stems; and 8.45, 2.18, 36.35, and 47.94 μg/plant in roots, respectively. The average accumulation amounts of Pb, Cd, Cu, and Zn in L. perenne under the intercropping method are 2.30, 1.40, 23.29, and 33.34 μg/plant in shoots and 1.43, 0.42, 3.21, and 6.98 μg/plant in roots, respectively. Thus, P. sinese has higher heavy metal accumulation. Compared with the monocultured plants, the average accumulation amounts of Pb, Cd, Cu, and Zn increased in both two plants. Therefore, intercropping P. sinese and L. perenne was the optimum planting pattern for heavy metal‐contaminated soil phytoremediation, and P. sinese was more suitable for heavy metal phytoextraction from soil.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
