新疆冬季密闭羊舍的空气质量分析

对一栋密闭式羊舍内的空气质量进行了观测及分析,结果表明:在舍内0.6m、1.6m和3.0m的不同高度层中,氨气的平均浓度分别35.0mg/m3、36.7mg/m3和44.2 mg/m3,其中3.0m显著高于0.6m、1.6m(P<0.05),0.6m、1.6m之间差异不显著(P>0.05);硫化氢的平均浓度分别为0.0039mg/m30、.0027 mg/m3和0.0030mg/m3,各层浓度间差异均不显著(P>0.05);二氧化碳的平均浓度分别为2571mg/m3、2593mg/m3和2581mg/m3,各层浓度间差异均不显著(P>0.05)。舍内NH3、H2S、CO2气体呈现一定的昼夜变化,三种气体白天的平均浓度均低于夜间。而舍内各环境因素之间存在一定的相关关系,其中温度高低对舍内NH3与CO2气体的含量有明显的影响,舍内空气湿度的变化对TSP、PM10的含量和粪便含水量对舍内NH3的含量亦有明显的影响,它们之间均存在显著的相关性。

Analysis of Air Quality in Winter Airtight Sheep House in Xinjiang

The experiment was conducted to observe and analyze the air quality in one airtight breeding sheep house.The results showed that the average concentrations of ammonia were 35.0 mg/m 3,36.7mg/ m 3 and 44.2 mg/ m 3 on 0.6m,1.6m and 3.0m-height layer respectively,and that on 3.0m-height layer was significantly higher than that on 0.6m and 1.6m-height layer(P<0.05),and there was no significant difference between that on 0.6m and 1.6m-height layer(P>0.05).The average concentrations of hydrogen sulfide were 0.0039mg/ m 3,0.0027mg/ m 3 and 0.0030mg/ m 3 on 0.6m,1.6m and 3.0m-height layer respectively,and there was no significant difference between that on the layers(P>0.05).The average concentrations of carbon dioxide were 2571mg/ m 3,2593mg /m 3 and 2581mg/ m 3 on 0.6m,1.6m and 3.0m-height layer respectively,and there was no significant difference between that on the layers(P>0.05).In the shed,the concentrations of NH3,H2S and CO2 had certain diurnal variation,the average daytime concentrations of three kind of gas were lower than that at night.But there was a certain correlation between the various environmental factors in the sheep house,which the level of temperature was influential obviously to NH3 and CO2 concentrations,the TSP and PM10 concentrations were affected significantly by air humidity change,fecal moisture content had also remarkable effect on NH3 concentration,there were significant relevance between them.