奶牛场2种粪污处理模式碳足迹的Meta分析  

Meta Analysis on Carbon Footprint of Two Manure Treatment Modes in Dairy Farms

作　　者：叶小梅[1] 王莉[1] 张曼秋 张应鹏[1] 杜静[1] YE Xiao-mei;WANG Li;ZHANG Man-qiu(Institute of Animal Science,Jiangsu Academy of Agricultural Sciences,Key Laboratory of Crop and Livestock Integration,Ministry of Agriculture and Rural Areas,Nanjing,Jiangsu 210014)

机构地区：[1]江苏省农业科学院畜牧研究所农业农村部种养结合重点实验室,江苏南京210014

出　　处：《安徽农业科学》2023年第2期236-239,共4页Journal of Anhui Agricultural Sciences

基　　金：江苏现代农业产业技术体系建设专项资金(JATS〔2020〕391)。

摘　　要：[目的]为综合评估不同奶牛粪污处理方式的温室气体排放规律。[方法]采用Meta分析法研究了粪污静态堆肥过程中、厌氧发酵过程及发酵后沼液在储存和还田过程中温室气体的排放规律。[结果]静态堆肥过程中CH_(4)、CO_(2)、N_(2)O的排放因子分别为3.66、86.77、1.70 g/kg;厌氧发酵过程中单位沼气产量为0.245 L/g;厌氧发酵后沼液储存和还田过程中CH_(4)、CO_(2)、N_(2)O的排放因子分别为10.88、83.80、5.72 g/kg。对比分析结果显示,厌氧发酵后沼液在储存和还田过程中CH_(4)和N_(2)O的排放量显著高于静态堆肥过程中的排放量,而2种粪污处理模式CO_(2)的排放量间无显著差异;但因厌氧发酵产生的CH_(4)可用于发电,能有效减少温室气体的排放。[结论]测算显示,厌氧发酵管理阶段温室气体的综合排放量为-1239.91 kg/Ueq,较静态堆肥具有更好的碳减排效果。[Objective]In order to comprehensively evaluate the emission of greenhouse gases(GHGs)from different cow manure treatment methods.[Method]Meta analysis method was used to study the emission of GHGs during static composting process,anaerobic fermentation process and the storage and returning of biogas slurry after anaerobic fermentation.[Result]The emission factors of CH_(4),CO_(2) and N_(2)O were 3.66,86.77 and 1.70 g/kg in the process of static composting,respectively.In the anaerobic fermentation process,the unit biogas slurry yield was 0.245 L/g;The emission factors of CH_(4),CO_(2) and N_(2)O were 10.88,83.80 and 5.72 g/kg during the storage and returning of biogas slurry after anaerobic fermentation,respectively.There were significant differences in CH_(4) and N_(2)O emissions between these two treatments,but no significant differences in CO_(2) emissions between these two treatments.The results of comprehensive calculation showed that the total greenhouse gas emissions of anaerobic fermentation during storage and returning farmland were higher than that of static composting,but the CH_(4) produced by anaerobic fermentation could be used for power generation,which could effectively reduce the greenhouse gas emissions produced by anaerobic fermentation.[Conclusion]The final comprehensive emission data of anaerobic fermentation greenhouse gas was-1239.91 kg/Ueq,which had better carbon emission reduction effect than static composting.

关 键 词：奶牛粪污 静态堆肥 厌氧发酵 META分析 温室气体 

分 类 号：S19[农业科学—农业基础科学]