Degradation Dynamics of Triadimefon and Difenoconazole Residues in Strawberry and Soil  

三唑酮和苯醚甲环唑在草莓及土壤中残留消解动态（英文）

作　　者：Song ZHOU Yutao ZHANG Qiuyun ZHANG Yubo ZHANG 周松;张玉涛;张秋云;张玉波(安顺学院化学化工学院/贵州省教育厅功能材料与资源化学特色重点实验室,贵州安顺561000)

机构地区：School of Chemistry and Chemical Engineering, Anshun University/ Special and Key Laboratory of Functional Material and Resource Chemistry of Guizhou Provincial Education Department, Anshun 561000, China.

出　　处：《Agricultural Science & Technology》2017年第10期1873-1877,共5页农业科学与技术（英文版）

基　　金：Supported by Tripartite Joint Fund of Science and Technology Department of Guizhou Province(LH[2016]7278);Agricultural Science and Technology Project of Science and Technology Department of Guizhou Province(NZ[2013]3029);Tripartite Joint Fund of Science and Technology Department of Guizhou Province(Key Project)(JLKA[2012]03);Natural Science Research Project of Department of Education of Guizhou Province(2011054)~~

摘　　要：A field experiment was employed to study the degradation of triadimefon and difenoconazole residues in strawberry and soil. The results showed that the degradation of both the two kinds of pesticides was in accordance with the first order kinetic equation. The half-lives of difenoconazole in strawberry fruit, strawberry stem leaf and soil were 4.09, 8.21 and 13.38 d, respectively; and the half-lives of triadimefon in strawberry fruit, strawberry stem and leaf and soil were 3.38, 5.31 and 15.64 d, respectively. The maximum residue limit （MRL） of difenoconazole in strawberry was recommended as 0.5 mg/kg, and 10% difenoconazole WG and 20% triadimefon EC should be applied four times with a safety interval of 7 d according to the amounts of 100 and 60 g a. i./hm2,respectively.采用田间试验的方式,对三唑酮及苯醚甲环唑在草莓及土壤中降解、残留情况进行研究。结果表明,2种农药的降解符合一级动力学方程,苯醚甲环唑在草莓果实、茎叶、土壤中的半衰期分别为4.09,8.21和13.38 d;三唑酮在草莓果实、茎叶、土壤中的半衰期分别为3.38,5.31和15.64 d。建议草莓中苯醚甲环唑的最大残留量(maximum residue limit,简称MRL)为0.5 mg/kg,10%苯醚甲环唑水分散剂、20%三唑酮乳油分别按照100、60 g a.i./hm2剂量施用4次,安全间隔期为7 d。

关 键 词：TRIADIMEFON DIFENOCONAZOLE DEGRADATION Residue STRAWBERRY HALF-LIFE Degradation dynamic 

分 类 号：S481.8[农业科学—农药学]