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首页> 外文期刊>Agriculture, Ecosystems & Environment: An International Journal for Scientific Research on the Relationship of Agriculture and Food Production to the Biosphere >Greenhouse gas emissions from storage and field application of anaerobically digested and non-digested cattle slurry
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Greenhouse gas emissions from storage and field application of anaerobically digested and non-digested cattle slurry

机译：厌氧消化和未消化的牛粪浆在储存和现场施用时的温室气体排放

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Emissions of the greenhouse gases (GHG), methane (CH4) and nitrous oxide (N2O) from non-digested and digested cattle slurry were measured during storage in a pilot-scale facility and during subsequent field application. In three treatments, non-digested cattle slurry (CS), digested cattle slurry (DCS) and digested cattle slurry covered with a roof (DCS-R), GHG emissions were measured during more than three months of storage in summer and in winter. After each storage season, CS and DCS were applied in the field before sowing, either in late summer or in spring, and compared with an unfertilised control (Control). GHG measurements were conducted using a closed chamber technique on both storage tanks and in the field, and the experiments were organised according to a randomised complete block design with three blocks. In the field, three closed chambers were placed randomly in each small plot. For every experimental unit, 7-9 measurements were made over time. Mean daily CH4 emissions during summer storage were 2.37, 7.79 and 6.78 g CH4-C m(-3) d(-1) Slurry for CS, DCS and DCS-R, respectively, and were significantly higher for DCS and DCS-R compared with CS (p 0.001). DCS-R gave significantly (p 0.05) lower CH4 emissions than DCS. The limited number of gas samples analysed during the study period may have resulted in increased uncertainty in the estimates. Mean daily CH4 emissions during winter storage were very low, with no significant differences (p > 0.05) between treatments. Non-negligible N2O emissions were only detected from DCS-R in summer (cumulative mean emissions 5.98 g N2O-N m(-2)), corresponding to an emissions factor for N2O-N (EFN2O) of 0.24%.
机译：在中试规模的设施中储存和随后的田间施用期间，测量了未消化和消化的牛粪便中温室气体（GHG），甲烷（CH4）和一氧化二氮（N2O）的排放量。在三种处理中，未消化的牛粪便（CS），消化的牛粪便（DCS）和覆盖有屋顶的消化的牛粪便（DCS-R），在夏季和冬季三个多月的储存期间测量了温室气体排放量。在每个存储季节后，夏末或春季播种前都要在田间施用CS和DCS，并与未施肥的对照（对照）进行比较。温室气体的测量是在储罐和野外使用密闭室技术进行的，实验是根据具有三个模块的随机完整模块设计进行的。在野外，每个小块地随机放置三个密闭室。对于每个实验单元，随时间进行7-9次测量。夏季存储期间，CS，DCS和DCS-R的平均每日CH4排放量分别为2.37、7.79和6.78 g CH4-C m（-3）d（-1）浆料，与之相比，DCS和DCS-R的CH4-C m（-3）d（-1）显着更高CS（p <0.001）。 DCS-R的CH4排放量明显低于DCS（p <0.05）。在研究期间分析的气体样本数量有限，可能导致估算的不确定性增加。冬季储存期间的平均每日CH4排放量非常低，各处理之间无显着差异（p> 0.05）。仅在夏季从DCS-R中检测到不可忽略的N2O排放（累计平均排放量5.98 g N2O-N m（-2）），对应于N2O-N的排放因子（EFN2O）为0.24％。

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