【有机农药在农田系统中迁移降解过程的检测及动态模型研究】.pdf

【有机农药在农田系统中迁移降解过程的检测及动态模型研究】.pdf

有机农药在农田系统中 迁移、降解过程的检测及动态模型研究 摘要 本文以新型除草剂丁草胺、禾草灵,稳杀特为对象,首先对三 种农药在施药作物及其环境样品的残留量分析方法进行了研究。丁 草胺包括稻田水。田土、鲜稻叶、稻杆、谷凝和糙米样.禾草灵有 麦田土、鲜麦叶、麦杆和麦粒样.稳杀特有棉花、花生田土、鲜叶、花生茎杆。花生米和棉籽样。整个分析过程包括残留物提取(丁草 胺及禾草灵以丙酮一石油醚为提取剂,稳杀特以水一丙酮为提取剂)浓缩。溴代衍生化(仅对稳杀特)、净化(以A120,、弗罗里硅 土Ag一A12O,及活性炭为吸附剂)和GC-ECD检测(面定 柏为2 OV-17.StudiesontheDeterminationandModel fortheMovement andDegradationofOrganic PesticideinAgrosysterm Abstract This Paper deals with the three aspects,residual analysis,photodegradation and model fortnemovementanddegradationoforganic pesticides in agrosysterm.fordiscribingmovementanddegradation rules of pesticideinthesoil-water-plant systerm of paddy fields,two-compartment modelisused for representingpersistence andmovementofpesticideinthesoil-water or soil-plant systerm and one-compartment model is used for solvlngdagrdatlonof pesticides in soil or pla