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沙门氏菌在福建省主要土壤中的存活动态及其影响因子研究
张桃香,杨文浩
0
(福建农林大学林学院,福州 350002;福建农林大学资源与环境学院,福建省土壤环境健康与调控重点实验室,福州 350002)
摘要:
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 pH 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。
关键词:  土壤  沙门氏菌污染  存活  动态  影响因子
DOI:10.13610/j.cnki.1672-352x.20161205.026
基金项目:国家自然科学基金项目“生物炭对红壤中沙门氏菌迁移和滞留的研究(41501272)和福建农林大学林学院青年科学基金“森林土壤对大肠杆菌吸附规律及粪肥添加响应”(6112C035002)共同资助。
Salmonella and factors influencing its survival in agricultural soil in Fujian Province
ZHANG Taoxiang,YANG Wenhao
(Forestry College, Fujian Agriculture and Forestry University, Fuzhou 350002;Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002.)
Abstract:
Salmonella is a main pathogen that threats the public health through biological pollution in the soil and foodborne disease outbreak. Hence, understanding the survival mechanisms in agriculture soil and factors affecting the survival of Salmonella will help estimate its environmental and ecological risks. The results showed that: (1) the salmonella population declined in all tested soils before reaching the detection limit. The survival time of salmonella in different soils was in the order of paddy soil > moisture soil > aeolian sandy soil> purple soil> red soil> yellow soil; (2) the soil pH and soil organic matter content were the main control factors influencing the survival of salmonella in Fujian agricultural soil. The results indicated that the survival time of salmonella in Fujian agricultural soil is long; therefore it could be a risk for polluting crops and underground water.
Key words:  soil  Salmonella pollution  survival  dynamic  influencing factors

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