CAJ | 학술논문

通过对不同深度层次的发酵床垫料、垫料下土壤、发酵床外土壤和传统猪场外的土壤样品进行连续分析测定，比较了不同养殖模式下 As 的累积状况及对周边环境的影响情况。结果表明：发酵床垫料使用近1年后，As 在0~20、20~40 cm 垫料层中存在明显的累积，累积量分别达7.5、6.7 mg·kg-1，存在向垫料下层土壤迁移的风险，且 As 在垫料下土壤中浓度的增加量高于发酵床外同深度的土壤（P<0.05）；废弃垫料中 As 的浓度在11.5~12.0 mg·kg-1之间，符合我国有机肥料农业行业标准，可以适当处理后进行农用；发酵床养殖模式对周边土壤中 As 累积的影响低于传统养猪模式。
통과대불동심도층차적발효상점료、점료하토양、발효상외토양화전통저장외적토양양품진행련속분석측정，비교료불동양식모식하 As 적루적상황급대주변배경적영향정황。결과표명：발효상점료사용근1년후，As 재0~20、20~40 cm 점료층중존재명현적루적，루적량분별체7.5、6.7 mg·kg-1，존재향점료하층토양천이적풍험，차 As 재점료하토양중농도적증가량고우발효상외동심도적토양（P<0.05）；폐기점료중 As 적농도재11.5~12.0 mg·kg-1지간，부합아국유궤비료농업행업표준，가이괄당처리후진행농용；발효상양식모식대주변토양중 As 루적적영향저우전통양저모식。
Increasing use of feeding additives in large scale pig farms has caused environmental and food safety concerns. Here we investi-gated 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, respec-tively. 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 tradi-tional raising method.