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| Effects of Sewage Sludge Compost on Chlorimuron-ethyl Residue and Fungal Community Structure in Soil |
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| KeyWord:sewage sludge compost；chlorimuron-ethyl；18S rDNA；PCR-DGGE；fungal community |
| Author Name | Affiliation | | MENG Ling-nan | College of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China | | XU Xiu-hong | College of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China | | LI Hong-tao | College of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China | | SUN Yu | College of Resources and Environmental Sciences, Northeast Agricultural University, Harbin 150030, China |
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| Abstract: |
| Applying sewage sludge compost to soils may promote degradation of organic pollutants via enhancing microbial activities. A pot experiment was carried out to examine the effects of sewage sludge compost applications on chlorimuron-ethyl residue and fungal community structures in soil. Compared with the control, fungal diversity indexes were increased by sewage sludge compost（2%, 4%, 8%）, with the maximum effects found at 4% compost. Soil fungal community structures were significant different at different growth stages of soybean（sowing, flowering, pod and harvest）, with greater diversity indexes at flowering and pod period than at sowing and harvest stages. Applying sewage sludge compost facilitated degradation of Chlorimuron-ethyl in the soil. Based on sequencing of fungal 18S rDNA fragments, the main fungal populations in the soil were Mortierellaceae, Saccharomycetaceae, Boletaceae and Sarcosomataceae. Saccharomycetaceae was mainly related to chlorimuron-ethyl degradation，and Mortierellaceae was regarded as an indicator of rich organic matter and nutrients in soil. |
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