发酵床养猪对土壤重金属含量的影响  

Effect of Bio-bed Pig Raising on Heavy Metal Contents in Soil

作　　者：李买军 马晗[1] 郭海宁[1] 王小治[1] 封克[1] 顾洪如[2] 

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225127 [2]江苏省农业科学院畜牧研究所,南京210014

出　　处：《农业环境科学学报》2014年第3期520-525,共6页Journal of Agro-Environment Science

基　　金：江苏省农业技术科技自主创新资金项目(CX(12)1001-6);江苏省普通高校研究生科研创新计划项目(CXLX13-910);扬州市-扬州大学校地合作专项(YZ2011146);扬州市环保科研课题

摘　　要：重金属已成为影响土壤健康的限制因素,通过对发酵床垫料、垫料下土壤、发酵床外土壤和传统猪场的土壤样品进行连续定点测定,评价发酵床养殖方式对土壤环境中重金属含量的影响。结果表明,5个月的发酵床养殖,Cu、Zn、Cr、Pb在垫料层0～40 cm累积明显,分别增加了41.23、51.73、13.52 mg·kg-1和5.23 mg·kg-1,垫料下方土壤Cr增加14.30 mg·kg-1,累积量较Cu、Zn、Pb显著升高;传统猪场土壤中的Cu、Zn、Cr较发酵床养殖方式累积更明显,主要集中在20 cm以下的土壤中,分别达22.77、41.83、5.50 mg·kg-1;与传统养殖方式相比,发酵床养殖对周边土壤重金属污染较小。Pig raising has caused heavy metal contamination in soil. A study was perforn^ed to determine the effects of bio-bed pig raising on heavy metal contents in bio-bed materials at different stages, in soil under the bio-bed, and in soil out of bio-bed, using soil from the tradi- tional pig raising in the same location as reference. After 5 months of pig raising, accumulation of heavy metals in bio-bed layer（0-40 cm ） was obvious. The increments of Cu, Zn, Cr and Pb contents were 41.23, 51.73, 13.52 rag-kg-I and 5.23 rag＂ kg-1, respectively. Soil Cr con- tent was found to increase by 14.30 mg＇kg-~ even in 40~80 cm underneath the bio-bed. The accumulation of Cu, Zn and Cr in the soil of traditional pig raising was 22.77, 41.83 mg.kg-1 and 5.50 mg.kg-~, respectively, higher than that in the soil out of the bio-bed. The data in this study indicate that bio-bed pig raising may have lower risk of heavy metal pollution to the surrounding soils than traditional one.

关 键 词：猪发酵床 垫料 土壤 传统养殖 重金属 

分 类 号：X713[环境科学与工程—环境工程]