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沙门氏菌是引发土壤生物污染和食源性疾病爆发的首要病原菌。以福建省几种主要土壤为研究对象,研究沙门氏菌在土壤中的存活动态及其主控因子,为评估福建省土壤中沙门氏菌存活可能导致的环境和生态风险提供科学依据。结果表明:(1)土壤中沙门氏菌的存活数量随时间均呈现出逐步下降的趋势,通过Weibul单指数模型计算得出沙门氏菌在水稻土中存活最长,且沙门氏菌在不同土壤中的存活时间顺序为:水稻土>潮土>滨海风沙土>紫色土>红壤>黄壤;(2)土壤p H与土壤有机质含量是影响沙门氏菌在福建农业土壤中的存活的主控因子。可见沙门氏菌在福建省6种主要土壤中的存活时间较长,均有污染农作物和地下水的风险。
Salmonella is the primary pathogen that causes soil microbial contamination and foodborne disease outbreaks. In this paper, several main soils in Fujian Province were selected as research objects to study the survival and control factors of Salmonella in soil so as to provide a scientific basis for assessing the potential environmental and ecological risks of Salmonella in Fujian soils. The results showed that: (1) The number of Salmonella survived in soil showed a trend of decreasing gradually with time. The Salmonella survived the longest in Paddy soil calculated by Weibul single exponential model, and the survival time of Salmonella in different soils was : Paddy soil> Chao soil> coastal aeolian sandy soil> purple soil> red soil> yellow soil; (2) soil p H and soil organic matter content are the main controlling factors that affect the survival of Salmonella in agricultural soil in Fujian. Salmonella can be seen in the six main types of soil in Fujian survival time is longer, both the risk of contaminated crops and groundwater.