妊娠猪舍氨气及氧化亚氮浓度测定与排放通量的估算

Measurement of ammonia and nitrous oxide concentrations and estimation of the emission rates from gestation pig buildings

摘要: 在北京选择一典型猪场，对不同季节妊娠舍的氨气及氧化亚氮浓度进行了为期1年的试验测定，并根据二氧化碳平衡原理，对猪场不同生长阶段的妊娠猪含氮气体的排放通量进行了估算。结果表明：冬季2004年11月氨气和氧化亚氮的平均浓度分别为11.64±4.36，（1.17±0.2）mg／m³，夏季7月舍内氨气和氧化亚氮的平均浓度分别为3.31±2.67，（0.6±0.02）mg／m³；妊娠猪饲养期间的氨气排放通量为每头（185.2～500.8）mg／h，氧化亚氮为（3.85～35.93）mg／h。

Abstract: Measurements of ammonia and nitrous oxide concentrations were taken from gestation pig buildings in Beijing for one year from 2004 to 2005. The NH₃ and N₂O emission flux per pig was estimated based on ventilation rates which were calculated by application of carbon dioxide mass balance method. The NH₃ and N₂O concentration and emission flux varied seasonally. Mean NH₃ and N₂O concentration values were 11.64±4.36 and (1.17±0.2)mg／m³ in November, 3.31±2.67 and (0.6±0.02)mg／m³ in July, and NH₃ and N₂O emission rate from pig building varied from 107.18 to 424.42mg／h, and 3.85 to 35.93 mg／h per animal respectively.