Journal of Guangxi Normal University(Natural Science Edition) ›› 2011, Vol. 29 ›› Issue (4): 132-135.

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Remediation Effects of Mn-contaminated Soil by Polygonum pubescens Blume

DENG Hua1,2, HUANG Qing-xian1, LU Jin-yi1, PAN Ming-wei1, LI Ming-shun1   

  1. 1.College of Environment and Resources,Guangxi Normal University,Guilin Guangxi 541004,China;
    2.Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi NormalUniversity) Ministry of Education,Guilin Guangxi 541004,China
  • Received:2011-07-15 Published:2018-11-16

Abstract: Pot experiment was used to study the Mn tolerance andaccumulation of Polygonum pubescens Blume under different Mn concentrationsin soil.On the other hand,ascorbic acid was added into the Mn-contaminated to investigate its influence on the remediation effect of the soil by the plant.Theresults indicated that the Polygonum pubescens Blume showed certain toleranceto the Mn-contaminated soil.The plant still grew well when Mn concentration was2 000 mg·kg-1.With the Mn concentration in the soil increasing,the manganese concentration in the tissues of the plant increased.Adding ascorbic acid can improve the tolerance of the plant so that they can be still alive when the Mnconcentration was 5 000 mg·kg-1.Adding ascorbic acid of lower concentration can increase the Mn translocation amount of Polygonum pubescens Blume from the Mn-contaminated soil,but higher concentration showed restrictive effect.

Key words: Polygonum pubescens Blume, Mn, phytoremediation, ascorbic acid

CLC Number: 

  • X53
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