农业环境科学学报2025，Vol.44Issue(1)：163-171,9.DOI:10.11654/jaes.2024-0049
风速和搅动对猪粪逸散气载微生物的影响
Effects of wind speed and agitation on the emission of airborne microorganisms from swine manure
摘要
Abstract
Manure is one of the important sources of airborne microorganisms in swine ganisms from swine manure to improve air quality in swine houses.The driving force for the escape of airborne microorganisms from manure in swine houses may be mainly due to wind and swine movement.In order to verify this hypothesis,simulated swine houses were constructed,agitation was used to simulate swine activity,and different fans were used to control the wind speed over manure surfaces.A 2×2 factorial design was adopted to study the emission of airborne bacteria and fungi from swine manure,which included two levels of each factor(wind speed:0 m·s-1 and 0.50 m·s-1;agitation situation:agitation and non-agitation).The experimental results indicated that,without agitation,swine manure had the lowest emission of airborne microorganisms,and the effect of wind speed on the concentration of airborne microorganisms that escaped from swine manure was not significant(P>0.05).Wind speed and agitation of swine manure were the main driving forces of the bacterial emissions from swine manure,with a significant interaction between these factors.The effect of wind speed on the dispersion of airborne microorganisms from swine manure was demonstrated under the condition of agitation.Under the condition of agitation and wind,swine manure released more airborne microorganisms with large particle sizes(>2.1 μm),and airborne bacteria and fungi with particle size range of 2.1-3.3 μm were the largest proportions accounting for 22%and 33%,respectively.The amount of airborne microorganisms dispersed from swine manure remained relatively stable before being stored for 144 hours,but increased rapidly thereafter.The bacterial species of swine manure were similar to those dispersed into the air,but the β diversity differed.The main conclusion of this study is that agitation is a prerequisite for the escape of airborne microorganisms in swine manure,and that wind can promote the escape of microorganisms.关键词
猪舍/粪源微生物/气载微生物/逸散动力Key words
swine house/microorganisms from swine manure/airborne microorganism/driving force of emissions分类
资源环境引用本文复制引用
王海洋,耿浩越,崔梦茹,王畅,赵宋文,李涵博,刘统帅,李顺义..风速和搅动对猪粪逸散气载微生物的影响[J].农业环境科学学报,2025,44(1):163-171,9.基金项目
国家自然科学基金项目(32102602) （32102602）
国家重点研发课题(2024YFC3713704) National Natural Science Foundation of China(32102602) （2024YFC3713704）
National Key Research and Development Program of China(2024YFC 3713704) （2024YFC 3713704）
