天堂国产午夜亚洲专区-少妇人妻综合久久蜜臀-国产成人户外露出视频在线-国产91传媒一区二区三区

智能化密閉商品肉雞舍冬季生物氣溶膠分布研究

發(fā)布時(shí)間:2019-01-22 17:44
【摘要】:為探究冬季智能化密閉商品肉雞舍生物氣溶膠分布規(guī)律,在山西中部某雞舍均勻地設(shè)置了36個(gè)采樣點(diǎn),使用Anderson-6撞式空氣微生物采樣器,對(duì)白天(AM10∶00-PM3∶00)和夜間(PM10∶00-AM3∶00)兩個(gè)時(shí)段的細(xì)菌和大腸桿菌的氣溶膠粒徑分布進(jìn)行分析,并對(duì)細(xì)菌、大腸桿菌、金黃色葡萄球菌、霉菌等的氣溶膠濃度分布以及氣體和粉塵等的濃度進(jìn)行監(jiān)測(cè)。結(jié)果表明:細(xì)菌氣溶膠主要存在于6級(jí)空氣微生物采樣器的Ⅰ、Ⅱ、Ⅲ級(jí);主要刺激人體的上呼吸道;通風(fēng)模式的不同對(duì)粉塵濃度的分布影響較大,對(duì)微生物氣溶膠濃度分布影響不大;白天微生物氣溶膠濃度分布與粉塵濃度分布不相關(guān),夜間相關(guān)。
[Abstract]:In order to investigate the distribution of biological aerosol in an intelligent closed commercial broiler house in winter, 36 sampling points were set up in a chicken house in the middle of Shanxi Province, and Anderson-6 air microorganism sampler was used. The aerosol particle size distribution of bacteria and Escherichia coli in two periods of AM10:00-PM3:00 and PM10:00-AM3:00 were analyzed, and bacteria, Escherichia coli, Staphylococcus aureus were analyzed. The aerosol concentration distribution of mold and the concentration of gas and dust were monitored. The results showed that bacterial aerosol mainly existed in grade 鈪,

本文編號(hào):2413420

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