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| Influence of Different Pig-raising Patterns on Soil As Accumulation |
| Received:April 23, 2014 |
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| KeyWord:bio-bed raising method;traditional raising;litters;soil;As |
| Author Name | Affiliation | E-mail | | MA Han | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127, China
Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing 210095, China | | | GUO Hai-ning | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127, China
Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing 210095, China | | | ZHENG Kai-qi | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127, China | | | LI Mai-jun | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127, China | | | YIN Wei-qin | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127, China
Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing 210095, China | | | WANG Xiao-zhi | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127, China
Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing 210095, China | xzwang@yzu.edu.cn | | FENG Ke | College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127, China
Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization, Nanjing 210095, China | | | GU Hong-ru | Institute of Animal Science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China | |
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| Abstract: |
| Increasing use of feeding additives in large scale pig farms has caused environmental and food safety concerns. Here we investigated soil As accumulation under different pig-raising methods. Arsenic concentrations in bio-bed litters and soils below litters(BL), from out of bio-bed(OBB) and from out of traditional pig farm(TPF) were continuously monitored. Significant accumulation of As in litter layers occurred after one year of pig-raising,and As concentration was 7.5 mg·kg-1 and 6.7 mg·kg-1 in 0~20 cm and 20~40 cm layers, respectively. Moreover, As had a potential to move down to 40~80 cm in the soil below litters. The accumulation of As in the BL soils was higher than that in OBB soils(P<0.05). Arsenic concentrations in waste litters varied between 11.5 mg·kg-1 and 12.0 mg·kg-1, which met the China's organic fertilizer agriculture standards. Bio-bed raising mode had less impact on As accumulation in surrounding soils than traditional raising method. |
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