农业环境科学学报Issue(10)：1991-1996,6.DOI:10.11654/jaes.2015.10.022
猪舍不同发酵床垫料温室气体排放研究
Greenhouse Gas Emissions from Bio-bed Pig Raising Units with Different Bedding Materials
摘要
Abstract
Bio-bed pig-raising is a new pig-raising technique, and is drawing increasing interests. However, the impact of this new system on greenhouse gas emissions is poorly understood. In this study, greenhouse gas(CO2, CH4 and N2O)emissions were monitored in pig units three bedding materials, including sawdust(S), sawdust + rice husk(SR)and sawdust + rice husk + straw(SRS), in Liuhe Bio-bed pig farms, Nanjing. The physical and chemical properties of bedding materials(pH, moisture, ammonium and nitrate)were also measured during the experimental period. Results showed that CO2 and N2O were the main greenhouse gases, both accounting for 99.3%~99.6%of the total greenhouse gas emissions. The emissions of N2O mainly occurred during the last one month of the feeding period, accounting for 61%~68%of the total N2O emission amount. The total CO2 and N2O emissions during the experimental period were not significantly different (P﹥0.05), while CH4 emissions were significantly different(P﹤0.01)among three materials. The largest CH4 emissions occurred in SRS treatment (18.60 g·m-2), followed by S treatment(8.10 g·m-2)and SR treatment(7.57g·m-2). Carbon dioxide equivalent emissions were higher in SRS than in S and SR, while the carbon dioxide equivalent emissions were not significantly different (P﹤0.05)between S and SR. In addi-tion, the carbon dioxide equivalent emissions per unit area were not significantly different in three beds during the experimental period (P﹥0.05). The mechanisms of the differences in three greenhouse gas emissions in the three treatments were also discussed.关键词
猪发酵床/温室气体/秸秆Key words
bio-bed/greenhouse gases/straw分类
资源环境引用本文复制引用
魏思雨,李建辉,刘姝彤,郭海宁,马晗,尹微琴,王小治,封克..猪舍不同发酵床垫料温室气体排放研究[J].农业环境科学学报,2015,(10):1991-1996,6.基金项目
江苏省农业科技自主创新资金项目（CX（12）1001-6）；江苏省苏北科技发展计划（BN2013010）；江苏省六大人才高峰项目（NY--017）；江苏省研究生科研创新计划 （）
