稻瘟灵在稻田环境中的消解动态  

The Degradation Dynamics of Isoprothiolane in Paddy-fields

作　　者：刘慧琳[1] 郭正元[1] 谭智勇[1] 刘斐[1] 石卿[1] 张宇[1] 

机构地区：[1]湖南农业大学农业环境保护研究所,湖南长沙410128

出　　处：《湖南农业科学》2011年第6期97-99,共3页Hunan Agricultural Sciences

基　　金：农业部药检所项目(NC2009F233)

摘　　要：选择湖南和浙江两省水稻田为试验对象,用气相色谱检测,研究了稻瘟灵在稻田环境中的消解动态。稻瘟灵在环境样品中的最小检出量为1.0×10-11 g。结果表明,稻瘟灵在水稻植株、土壤和稻田水中的降解符合一级化学反应动力学方程,C=Coe-kt;稻瘟灵在湖南省和浙江省水稻植株中的半衰期分别为5.81、5.29 d,在稻田水中的半衰期分别为7.72、8.79 d,在稻田土中的半衰期分别为11.73、14.68 d。The degradation dynamic of Isoprothiolane in Paddy-fields of Hunan Province and Zhejiang Province was studied by using gas chromatography（GC）.The results showed that the minimum detectable amount of Isoprothiolane in samples was 1.0×10-11 g;the degradation of Isoprothiolane in rice plant,soil and water in paddy-field accorded with the first-order chemical kinetic equation C=Coe-kt;the average half life of Isoprothiolane was 5.81 d and 5.29 d in rice plants from Hunan Province and Zhejiang Province respectively,7.72 d and 8.79 d in water from paddy-fields of Hunan Province and Zhejiang Province respectively,11.73 d and 14.68 d in soil from paddy-fields of Hunan Province and Zhejiang Province respectively.

关 键 词：稻瘟灵 水稻 消解动态 气相色谱 

分 类 号：S435.111[农业科学—农业昆虫与害虫防治]