美国研究：养殖场大肠杆菌可经空气污染周边作物
发布时间：
2022-11-16
作者：
据外媒报道，《应用与环境微生物学》杂志刊登一项美国研究显示，养殖场中的大肠杆菌可借助空气传播，并污染周边农作物。
该研究由美国农业部肉用动物研究中心Elaine D. Berry及其同事花费两年时间完成。
研究显示，养牛场周边的蔬菜会受到养牛场大肠杆菌的污染，且距离越远污染程度越低。
研究发现，距离养牛场60米的地方平均会有3.5%的绿叶蔬菜被大肠杆菌污染，在距离180米的地方也有1.8%的蔬菜被大肠杆菌污染。
研究还发现，污染程度最高的时间为8月和9月份，当时降水稀少并且温度较高，这种条件下大肠杆菌更容易传播。
According to foreign media reports, a us study published in the journal of applied and environmental microbiology shows that e. coli in farms can spread by air and contaminate surrounding crops.
The study was conducted over two years by Elaine d. Berry and her colleagues at the U.S. department of agriculture's meat animal research center.
Research has shown that vegetables around cattle farms are contaminated with e. coli from cattle farms, and the farther away they are, the less contaminated they are.
The study found that an average of 3.5 per cent of green leafy vegetables 60 metres from cattle farms were contaminated with e. coli, and 1.8 per cent of vegetables 180 metres away were contaminated with e. coli.
The study also found that the highest levels of contamination occurred in August and September, when rainfall was low and temperatures were high, making e. coli more likely to spread.