锯末添加比例对牛粪贮存过程中氨气和温室气体排放的影响

发布时间：2018-04-14 08:15

本文选题：牛粪 + 添加锯末　；参考：《西南大学学报(自然科学版)》2017年03期

【摘要】：为了研究添加锯末对牛粪堆积过程中气体排放的影响,试验采用静态箱技术探讨了牛粪单独贮存、牛粪和锯末质量比为2∶1和1∶1(干物质基础)对贮存过程中氨气和温室气体排放的影响.结果表明:在90d贮存期内,牛粪单独贮存、牛粪锯末质量比为2∶1和1∶1的氨气累积排放量分别为16.00,4.54和7.05mg/kg,氧化亚氮累积排放量分别为11.23,19.83和6.86mg/kg,甲烷累积排放量分别为839.87,81.24和65.69mg/kg,二氧化碳累积排放量分别为8.41,59.76和83.83g/kg.添加锯末显著降低了牛粪贮存过程中氨气和甲烷的排放量(p0.05),但同时也显著增加了二氧化碳的排放量(p0.05).牛粪锯末质量比为2∶1时,氧化亚氮排放量显著增加(p0.05),牛粪锯末质量比为1∶1时氧化亚氮排放量却显著降低(p0.05).牛粪单独贮存、牛粪锯末质量比为2∶1和1∶1时的总温室气体排放量分别为26.55,7.55和3.68g/kg(CO_2基础),与牛粪单独贮存相比,牛粪锯末质量比为2∶1和1∶1处理组的总温室气体排放量分别降低了71.57%(2∶1)和86.13%(1∶1).
[Abstract]:In order to study the effect of adding sawdust on the gas emission in the process of cow dung accumulation, the static box technique was used to study the storage of cow dung alone.Effects of the ratio of cow dung and sawdust to 2:1 and 1: 1 (dry matter basis) on ammonia and greenhouse gas emissions during storage.The results showed that cattle dung was stored alone during 90 days of storage.The cumulative emissions of ammonia and nitrous oxide at 2:1 and 1:1 were 16.00 mg / kg and 7.05 mg / kg, respectively. The cumulative emissions of nitrous oxide were 11.23 mg / kg and 6.86 mg / kg, respectively. The cumulative emissions of methane were 839.87 mg / kg and 65.69 mg / kg, respectively. The cumulative carbon dioxide emissions were 8.41 mg / kg and 83.83 g / kg, respectively.The addition of sawdust significantly reduced the emissions of ammonia and methane during the storage of cow dung, but also significantly increased the emissions of carbon dioxide.When the mass ratio of cow dung sawdust was 2:1, the nitrous oxide emission increased significantly, while the nitrous oxide emission decreased significantly when the mass ratio of cow dung sawdust was 1:1.The total greenhouse gas emissions at 2:1 and 1:1 were 26.55 ~ 7.55 and 3.68g/kg(CO_2, respectively, compared with the storage of cow dung alone.The total greenhouse gas emissions in the 2:1 and 1:1 treatment groups were reduced by 71.57 and 86.1313 to 1: 1 respectively.
【作者单位】：西南大学(荣昌校区)动物科学系;中国农业科学院农业环境与可持续发展研究所;东北农业大学动物科学技术学院;
【基金】：国家自然科学基金(31201807) 中央高校基本科研业务费专项(XDJK2015C127)
【分类号】：X713

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