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| Effects of N Application on Physiological Properties and Accumulation Characteristic of Pb and Zn in Arabis alpinal var. parviflora Franch |
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| KeyWord:Arabis alpinal var. parviflora Franch; Pb; Zn; accumulation characteristic; N |
| Author Name | Affiliation | | LI Yuan | College of Resource and Environment, Yunnan Agricultural University | | WEI Qiao | College of Resource and Environment, Yunnan Agricultural University | | ZU Yan-qun | College of Resource and Environment, Yunnan Agricultural University |
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| Abstract: |
| Pot experiments were conducted to study the effects of N application on soil pH value, forms of Pb and Zn, biomass, contents of chlorophyll and praline, membrane permeability, and accumulation characteristics of Pb and Zn under Pb and Ｚｎ ｓｔｒｅｓｓ（1000ｍｇ·ｋｇ－１）． Ｔｈｅ results showed that soil pH value decreased with N application. Percentage of bio-available Pb and Zn in soil reached the maximum under N 0.1 g·kg-1 and 0.3 g·kg-1 comparing with other treatments, respectively. With N application, water soluble Pb contents and exchangeable Pb contents increased from 3.9% to 11.5%~13.7% and water soluble Zn contents and exchangeable Zn contents increased from 13.4% to 19.3%~23.5%. Chlorophyll contents and biomass increased with increase in rates of N application. Praline content and membrane permeability in leaves of A. alpinal increased with N 0.1~0.3 g·kg-1 application. Contents and accumulation of Pb and Zn in shoot and root of A. alpinal increased with increase in rates of N application. Bioaccumulation factor and transfer factor of Pb and Zn were more than 1. Therefore, adsorption of Pb and Zn of A. alpinal should be promoted and remediation efficiency of A. alpinal to soil contaminated by Pb and Zn could be improved by suitable N application（０．１ ｇ·ｋｇ－１）. |
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