ISSN: 0973-7510

E-ISSN: 2581-690X

Yong-Li Zhang1,2#, Yi-Hai Chen1#, Ren-Qing Wang1,2, Jun-Shan Qi3 and Jiu-Lan Dai1
1Environment Research Institute, Shandong University, Jinan 250100, China.
2College of Life Science, Shandong University, Jinan 250100, China.
3Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan 250100, China.
J Pure Appl Microbiol. 2014;8(3):1993-2001
© The Author(s). 2014
Received: 17/01/2014 | Accepted: 28/03/2014 | Published: 31/06/2014
Abstract

A greenhouse pot experiment was conducted to evaluate the effect of sewage sludge enriched with Cd, Cu, Zn and Hg on soil rhizosphere microbial community of winter wheat (Triticum aestivum L.). The results showed that wheat biomass was negatively influenced by adding sewage sludge and heavy metals, microbial biomass carbon (Cmic), functional diversity (H’) and average well color development (AWCD) significantly increased with increasing the application rate of sewage sludge. The Cmic and the ratio of Cmic and organic carbon (Corg) obviously increased with adding the contents of heavy metals at without sludge treatments, while the wheat biomass obviously decreased. Furthermore, there was the greater negative effect of combination between sewage sludge and heavy metals on microbial properties. Our study suggested that it was necessary to apply sewage sludge on a small scale and lay special stress on the importance of removing the heavy metals from sewage sludge to facilitate the long-term agricultural use in croplands.

Keywords

Sewage sludge, Heavy metal, Microbial community, Rhizosphere soil, Wheat

Article Metrics

Article View: 705

Share This Article

© The Author(s) 2014. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.