【摘要】 鸡舍中的NH₃已成为影响人畜健康的重要污染物,为了解蛋鸡养殖环境中NH₃浓度变化规律,采用便携式畜禽舍环境动态监测仪对密闭笼养蛋鸡舍内NH₃浓度和温湿度等指标进行测定,分析其变化规律及其与环境因子之间的相互关系。结果表明:试验鸡舍内日平均温度春季为（20.9±1.3）℃、夏季为（24.3±0.8）℃、秋季为（20.4±0.9）℃、冬季为（14.7±0.9）℃;日平均相对湿度春季为37.7%±4.9%、夏季为70.7%±3.0%、秋季为52.6%±3.4%、冬季为52.6%±1.6%;日平均NH₃浓度春季为（2.46±1.01）mg·m^-3、夏季为（0.03±0.02）mg·m^-3、秋季为（4.72±1.73）mg·m^-3、冬季为（3.05±0.41）mg·m^-3。不同季节鸡舍内NH₃浓度与温度和相对湿度均呈现一定的相关性,在高温条件下,鸡舍内NH₃浓度随湿度的升高而增高,而在低温条件下,鸡舍内NH₃浓度则随湿度的升高而降低。研究表明,环境的温湿度对鸡舍内NH₃浓度影响很大,对鸡舍内温湿度的科学管理和合理调节是降低舍内NH₃浓度的关键。更多还原

【Abstract】 Large-scale egg-production facilities are emission sources of various gases and particulate matter. Ammonia is one of the main gases emitted from laying hen houses. The ammonia emissions from housing systems for laying hens must be reduced to abate environmen?tal damage. A study was conducted to monitor the concentration of NH₃, temperature and relative humidity in layer house. Then the relation?ship between the concentration of NH₃ and environmental factors were analyzed. The results showed that the average daily temperature was（20.9±1.3）℃,（24.3±0.8）℃,（20.4±0.9）℃, and（14.7±0.9）℃ in spring, summer, autumn and winter respectively. And the average dai?ly relative humidity was 37.7%±4.9% in spring, 70.7%±3.0% in summer, 52.6%±3.4% in autumn and 52.6%±1.6% in winter. And the av?erage daily concentration of ammonia was（2.46±1.01）mg·m^-3 in spring,（0.03±0.02）mg·m^-3 in summer,（4.72±1.73）mg·m^-3 in autumn and（3.05±0.41）mg·m^-3 in winter. The concentration of ammonia in the layer house in different seasons had a certain correlation with the temperature and relative humidity. The change of the ambient temperature and humidity influenced the concentration of ammonia in the layer house. It was observed that ammonia emission rates in summer were lower than in winter because the high airflow stabilized the manure by drying it. The reductions due to lower moisture content were greater than the increase due to higher temperature.更多还原