机械通风对鸡舍内NH_3浓度影响的研究

目的]为科学养鸡提供参考依据。方法]在风机开启与关闭状态下分析鸡舍内不同位置垂直方向上和不同高度水平方向上NH3浓度的变化,并定点监测NH3浓度随时间的变化。结果]在整个鸡舍空间内,风机通风降低NH3浓度的量占风机关闭时浓度的比重最大值为69.3%,最小值为30.6%,而在定点位置处连续监测到的NH3浓度差占风机关闭时浓度比重的最大值为56.5%。结论]机械通风可有效地降低鸡舍内NH3的浓度。

Effect of the Mechanical Ventilation on the NH3 Concentration in Chicken-raising House

Objective] The scientific basis for chicken-raising was provided through the experiment. Method] The NH3 concentration of the vertical direction at different locations and horizontal direction at different heights in chicken house under the open and closed states of the fan were tested,and the changes of sentinel surveilance NH3 concentration depended on the variation.Results] in throughout the ones in space,the NH3 concentration reduced by the ventilation fans accounted for 69.3 percent of the maximum concentration when the fan was off;the minimum was 30.6 percent.At fixed-point position in the continuous monitoring of NH3,the difference of the NH3 concentration was 56.5 percent of the maximum concentration in the closed state of chicken-raising house.Conclusion] The mechanical ventilation could be effective in the reduction of the NH3 concentration of the ones.