Effect of Bacillus Megaterum LY02 on Phytoremediation of Heavy Metal from Contaminated Soil by Lolium Perenne L.

doi:10.13870/j.cnki.stbcxb.2017.05.053

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Effect of Bacillus Megaterum LY02 on Phytoremediation of Heavy Metal from Contaminated Soil by Lolium Perenne L.

更新时间：2025-03-12

- Effect of Bacillus Megaterum LY02 on Phytoremediation of Heavy Metal from Contaminated Soil by Lolium Perenne L.
- Vol. 31, Issue 5, Pages: 340-344(2017)
- 作者机构：
  
  1. 浙江农林大学生物农药高效制备技术国家地方联合工程实验室,杭州,311300
  2. 浙江省丽水市林业局开发区分局,浙江,丽水,323000
  3. 浙江省土壤污染生物修复重点实验室,杭州,311300
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2017.05.053
  CLC： X53
- Published：2017
- 稿件说明：
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Effect of Bacillus Megaterum LY02 on Phytoremediation of Heavy Metal from Contaminated Soil by Lolium Perenne L.[J]. 2017, 31(5): 340-344.
DOI：

Effect of Bacillus Megaterum LY02 on Phytoremediation of Heavy Metal from Contaminated Soil by Lolium Perenne L.[J]. 2017, 31(5): 340-344. DOI： 10.13870/j.cnki.stbcxb.2017.05.053.

摘要

采用盆栽试验方法，研究了接种巨大芽孢杆菌LY02对黑麦草修复Cd、Cu污染土壤以及二者复合污染土壤效果的影响。结果表明：在Cd、Cu污染土壤及复合污染土壤中接种巨大芽孢杆菌LY02，可显著提高黑麦草地上部生物量，增幅达65.0%~108.3%；促进了黑麦草在3种污染土壤中对重金属的吸收，其中对Cd污染土壤中黑麦草吸收Cd的影响最为显著，地上部Cd吸收量较对照组增加了45.8%（P<0.05）；3种污染土壤中黑麦草根际土壤有效磷含量显著升高，较对照组分别增加了18.2%，26.7%，16.2%；黑麦草根际土壤中有效态Fe含量显著提高，Cu单一污染土壤中增幅最大，达到152.5%；3种污染土壤中有效态重金属含量升高，在Cu污染土壤中，有效态Cu增幅达到49.7%（P<0.05）。综上所述，巨大芽孢杆菌LY02通过增加污染土壤中生物可利用态P和Fe，促进黑麦草生长；通过提高有效态Cd和Cu的含量，增加黑麦草对其吸收，从而提高了黑麦草对Cu、Cd污染土壤的修复效率。

Abstract

Pot experiments were carried out to evaluate the influence of Bacillus megaterum LY02 inoculation on phytoremediation of Cd

Cu and Cd-Cu contaminated soil by Lolium perenne L. The results showed that inoculation B. megaterum LY02 in Cd

Cu and Cd-Cu contaminated soil significantly increased the aboveground biomass of Lolium perenne L by 65%~108.3%. The strain promoted phytoextration of heavy metal by Lolium perenne L in different kinds of contaminated soil

and Cd extraction was increased significantly by 45.8% compared with the control. Compared with the control

B. megaterum L siginificantly enhanced the available phosphorus in three kinds of contaminated soil by 18.2%

26.7% and 16.2%

respectively. The available Fe was increased after inoculation

especially in Cu-contaminated soil

the increase was up to 152.5%. Furthermore

the content of available Cd and Cu in the rhizosphere were also enhanced in the three kinds of contaminated soil

the available Cu was increased by 49.7% in the Cu-contaminated soil. Above all

inoculation B. megaterum LY02 in Lolium perenne L can improve the content of available P and Fe in the contaminated soil

and enhance the content of available Cd and Cu

which are beneficial for the improvement of remediation efficiency of Lolium perenne .

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