江苏某镇稻田污染事故诊断研究  

Diagnosis of the Paddy Field Pollution Accident in Some Town of Jiangsu

作　　者：张胜田[1] 江希流[1] 叶青[2] 

机构地区：[1]国家环保总局南京环境科学研究所,江苏南京210042 [2]南京市第三公证处,江苏南京210008

出　　处：《农业环境科学学报》2005年第z1期254-256,共3页Journal of Agro-Environment Science

摘　　要：在调查江苏某镇稻田污染事故的过程中,限于在污染事故发生时没有及时取样进行检测分析,只能通过排它法确认稻田污染事故的原因。根据受害秧田的分布特征及秧苗受害程度不同,认为灌溉水严重超标是造成污染事故的主要原因;通过调查沿河企业废水排放情况及水质特征,认为主要污染因子是pH值和盐度;分析低pH值和高盐度对秧苗的危害机理及秧苗受害特征,受害秧苗的根部、叶部症状特征和灌溉水的低pH值和高盐度之间存在事实因果关系,进一步确认了主要污染原因和污染因子。The reasons of the paddy field pollution accident of some town in Jiangsu were investigated and analyzed.Since no environmental and seedling samples were collected,the exclusion method was used to the reasons of the paddy field pollution accident.Based on the distribution characters and the of the harmed paddy field,the irrigation water quality that exceeded the standard seriously was considered as the main reason.By investigating the wastewater discharge and wastewater quality in the enterprises along the river,pH value and salinity were the main pollution factors.Through analyzing the features and the harm mechanism of low pH value and high salinity,there existed between the symptoms of the harmed seedling roots and leaves with the low pH value and high salinity of irrigation water,which further verified the main reasons and the main pollution factors.

关 键 词：稻田 污染事故 灌溉水 PH 盐度 

分 类 号：X928[环境科学与工程—安全科学]