|
| Effects of intercropping on growth and Cd/Zn Uptake by Sedum plumbizincicola and Excoecaria cochinchinensis |
| Received:August 05, 2020 |
| View Full Text View/Add Comment Download reader |
| KeyWord:Sedum plumbizincicola;Excoecaria cochinchinensis;intercropping;cadmium uptake;zinc uptake |
| Author Name | Affiliation | E-mail | | GUAN Yuan-jing | College of Agriculture, Guizhou University, Guiyang 550025, China
Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | LIU Hong-yan | College of Agriculture, Guizhou University, Guiyang 550025, China | hyliu@gzu.edu.cn | | SUN Xi | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | ZHU Ren-feng | Jiangsu Fireflying Environmental Science and Technology Co., Ltd., Nanjing 210008, China | | | ZHAO Jie | Jiangsu Fireflying Environmental Science and Technology Co., Ltd., Nanjing 210008, China | | | ZHANG Ya-bing | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | WU Long-hua | Key Laboratory of Soil Environment and Pollution Remediation, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | |
|
| Hits: 2248 |
| Download times: 2621 |
| Abstract: |
| This study used both glass pot and field experiments to investigate the influence of root compartment models on plant growth and Cd and Zn uptake by Sedum plumbizincicola and Excoecaria cochinchinensis under an intercropping system. The pot experiment included the following five treatments:(1)an S. plumbizincicola-E. cochinchinensis intercropping system with a plastic plate compartment(COP); (2) an S. plumbizincicola-E. cochinchinensis intercropping system with a 300-mesh nylon mesh compartment(COM);(3) an S. plumbizincicola-E. cochinchinensis intercropping system without any compartment(CO);(4)a monoculture system of E. cochinchinensis (EcM); and(5)a monoculture system of S. plumbizincicola(SpM). The results showed that the biomass of S. plumbizincicola was slightly higher in the COP treatment than in the SpM treatment, which was significantly higher than that of both COM(by an increase of 100%)and CO(by an increase of 149%). Under the COP treatment, the Cd and Zn uptake by each plant was significantly higher than that of monoculture, with increases of 28.3% and 14.0%, respectively. With a gradual enhancement of root function, the Cd and Zn uptake under the COM and CO treatments were significantly lower than those of the COP and SPM treatments. The results of the field experiment showed that intercropping had no significant effect on the growth and Cd/Zn absorption by the two plants. In the pot experiment, the root system interaction between S. plumbizincicola and E. cochinchinensis significantly affected the growth and Cd and Zn uptake; however, maintaining a certain plant row spacing under field conditions did not have any inhibitory effect. Therefore, it is feasible to remediate Cd/Zn contaminated soil while intercropping landscape plants in fields. |
|
|
|
