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《Journal of Agro-Environment Science》 2011-07
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Earthworm Decomposing Organic Solid Waste in Rural Areas

LAI Fa-ying, ZHOU Ying, WANG Guo-feng, CHEN Wen-ji, YANG Lin, YU Pao-lan (College of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045, China)  
Organic solid waste in rural areas was studied with earthworm(Eisenia foetida) decomposing. According to the living habits of earthworms, four different combinations of the test′s ground-substance was designed for pot experiment. The main components of the ground-substance were kitchen waste. Additional material were pig dung, cow dung and soil. The ground-substance without earthworm was the contrast. Treatment time was five weeks. Results showed earthworm had best effect on decomposing fresh organic waste. The rate of biological degradation of fresh organic waste was 75.688%. In addition, the increment of earthworm′s quality and quantity for everyday was also greatest in fresh organic waste. The available fertilizer of the ground-substance had obvious increase after earthworms decomposing compared with the control sample. The concentration of organic carbon, nitrogen and phosphorus in the ground-substance was higher than in control sample. The content of alkali-hydrolyzed nitrogen in the ground-substance was three times higher than in control sample. C/N and available phosphorus in the round-substance of fresh organic waste were the highest. Earthworms could accumulated heavy metals from the ground-substance. Accumulation rate of heavy metal in the earthworms was about 48 percent. There were significant difference between most results of each group(P0.05).
【Fund】: 国家科技支撑计划项目(2008BAD96B04);; 江西省科技厅项目(20041A0400301)
【CateGory Index】: X799.3
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