发酵床养猪过程中甲烷的排放及其影响因素  

Methane Emission and Influencing Factors in Bio-bed Pig Raising

作　　者：李建辉[1] 郭海宁[1] 魏思雨[1,2] 马晗[1,2] 尹微琴[1] 王小治[1,2] 封克[1,2] 顾洪如[3] 

机构地区：[1]扬州大学环境科学与工程学院,江苏扬州225127 [2]江苏省有机固体废弃物资源化协同创新中心,江苏南京210095 [3]江苏省农业科学院畜牧研究所,江苏南京210014

出　　处：《环境科学与技术》2015年第7期93-97,111,共6页Environmental Science & Technology

基　　金：江苏省农业科技自主创新资金项目(CX(12)1001-6);扬州市科技攻关项目(YZ2011146);江苏省苏北科技发展计划(BN2012027;BN2013010);江苏省三新工程(SXGC[2013]369)

摘　　要：为研究发酵床养猪甲烷排放情况,对南京六合猪场发酵床猪舍内CO2和CH4浓度进行测定,通过二氧化碳平衡法,估算了猪场甲烷排放通量,并分析垫料含水率、p H、温度和有机质的变化,探讨其对CH4排放的影响。结果表明：试验期间舍内CH4和CO2浓度总体上呈升高趋势,CO2平均浓度为894.81 mg/m3,明显低于猪舍环境质量标准推荐的CO2浓度标准（1 500 mg/m3）;CH4平均浓度为1.59mg/m3,单只育肥猪平均CH4排放通量变化范围为122.48-162.09 mg/（h·头）或每标准动物单位排放量711.27～1 199.75 mg/（h·AU）。在不同影响因素中,垫料有机质含量是影响舍内甲烷排放量变化的最重要因素（r=0.949,P〈0.05）,有机质含量越高,其甲烷排放潜力越大。To study methane emissions by carbon balance method, CO2 and CH4 concentration were determined in Liuhe Pig Bio-bed Farms, Nanjing. And to explore its effect on CH4 emissions, the litter moisture content, pH, temperature and organic matter changes were analyzed. The results showed that CH～ and CO2 concentration in barn was overall tended to increase, the average COs concentration was 894.81 mg/m3 that was lower than the piggery environmental quality standards recommended （1 500 rag/m3）. The average CH4 concentration were 1.59 mg/m3, CH4 emission from pig house varied between 122.48～162.09 mg/（h ·pig） or 711.27-1 199.75 mg/（h·AU）. By correlation analysis, organic matter is a major factor in the impact of methane emissions （r=0.949,P〈0.05）, the higher content of organic matter,the greater potential methane emissions.

关 键 词：甲烷 猪发酵床 温室气体 影响因素 

分 类 号：X712[环境科学与工程—环境工程]