碘甲磺隆钠盐在土壤和小麦中的残留动态  

Degradation Dynamic of Iodosuifuron-methyl-sodium in Soil and Wheat

作　　者：贺德春[1,2] 杨仁斌[1] 许振成[3] 郭正元[1] 吴根义[1] 

机构地区：[1]湖南农业大学资源环境学院,长沙410128 [2]荆楚理工学院化工与药学院,湖北荆门448000 [3]环境保护部华南环境科学研究所,广州510655

出　　处：《农药》2010年第6期426-428,共3页Agrochemicals

基　　金：环境保护部公益基金(200809093)

摘　　要：在长沙市马坡岭和北京市通县开展了碘甲磺隆钠盐在小麦植株和土壤中的残留降解动态试验。两地试验结果表明:在施药剂量为28.2ga.i./hm2时,长沙市马坡岭试验点碘甲磺隆钠盐在小麦植株和土壤中的半衰期分别为4.1、7.4d,北京市通县试验点碘甲磺隆钠盐在小麦植株和土壤中的半衰期分别为5.4、22d,碘甲磺隆钠盐在小麦茎叶和土壤中都能迅速降解,其中在小麦植株中的降解更快。6.25%碘甲磺隆钠盐水分散粒剂用于小麦田除草,施药剂量分别为18.8、28.2ga.i./hm2时,施药1次,收获期小麦籽粒、麦秆及土壤中的残留均低于0.003mg/kg。In order to prove the residue degradation rules after being used in wheat field and assess the security of iodosuifuron-methyl-sodium(IMS),a field-supervised experiment was conducted to reveal the degradation dynamics of IMS in soil and wheat in Changsha and Beijing,respectively.When the applied concentration of this herbicide was 28.2 g a.i./ha,the half-lives of IMS in wheat and soil was 4.1 and 7.4 d in Changsha,respectively,that was 5.4 and 22 d in Beijing respectively.The results showed that IMS can be ...

关 键 词：残留动态 小麦 土壤 碘甲磺隆钠盐 

分 类 号：TQ450.263[化学工程—农药化工]