不同堆放方式对牛粪温室气体排放的影响

Effect of Compost on the Greenhouse Gases Emission from Dairy Manure

为了研究不同堆放方式对牛粪温室气体排放的影响,试验采用静态箱-气相色谱法对3种不同堆放处理的奶牛粪便在夏秋季的温室气体排放速率进行了观测。结果表明,两个季节CO2和CH4在试验前期排放速率较大,中后期排放较少;N2O在试验前期排放速率较小,后期排放速率逐渐上升;牛粪不同堆放方式对温室气体排放的影响很大,除了夏季试验堆放高度50cm和25cm处理CH4的排放速率差异不显著之外,其他处理间温室气体的排放差异都显著,两个季节中每天加粪10kg处理CO2和CH4的排放速率较大,其他处理CO2和CH4的排放速率较小;N2O的排放速率基本表现出相反的趋势。综合温室效应每天加粪10kg处理的最大,堆放高度为50cm处理的最小。

In a storage experiment with dairy cow manure, the effects of different piling height （25 em and 50 era） and changing manure amount by adding 10 kg per clay on CO2 ,CH4 and N2O emissions from manure were investigated in summer and autumn,2006. The emissions of these three greenhouse gases from different treatments were measured by using the static ehamber-GC with manual method. The emission rates of CO2 and CH4 were higher at the early stage, and lower at middle and late stages from the manure of three treatments in the two seasons. The emission rate of N2O was lower at the early stage, and increased gradually at later stage of the experiment. Different treatments affected the GHG emission greatly. The GHG emissions from dairy manure were significantly different with each other except CH4 emission between the treatments of the height of 50 cm and 25 cm in summer. And the emission rates of CO2 and CH4 were higher for the treatment adding 10 kg manure per day, and lower for the other treatments. The emission rates of N2O showed the contrary trend. Global warming potential （GWP） of the treatments adding 10 kg manure per clay was highest among the three treatments, while the treatment with the piling height of 50 cm was lowest.