Residue Decline Studies on 20% Acetochlor+Bensulfuron-methyl WP in Rice  

20%苄·乙可湿性粉剂在水稻中的残留动态研究(英文)

作　　者：侯志广[1] 逯忠斌[1] 才爽[1] 谢文明[1] 

机构地区：[1]吉林农业大学资源与环境学院,吉林长春130118

出　　处：《Plant Diseases and Pests》2010年第5期61-63,共3页植物病虫害研究（英文版）

基　　金：Supported by Pesticide Residue Project in Department of Agriculture(2008F324)~~

摘　　要：[Objective] The aim was to research the residue decline and final residue of acetochlor in rice.[Method] By carrying out crop field trials in 3 places including Heilongjiang,Jilin and Hunan during two years and applying GC technique,the residue decline of acetochlor in rice was analyzed and its final residue was determined.[Result] The half-life of acetochlor in rice was 4.4-8.3 d,being relatively short,and it belonged to easily degradable pesticide.Under dosage condition with effective components of 600 and 900 g/hm2,after application for one time,the determined acetochlor residues in rice were lower than 0.01 mg/kg.[Conclusion] Take multiple factors into consideration,according to the treatment with application dosage of 900 g/hm2,it was suggested that the MRL value of acetochlor in rice should be ascertained as 0.02 mg/kg temporarily and acetochlor should be applied for one time.[Objective] The aim was to research the residue decline and final residue of acetochlor in rice.[Method] By carrying out crop field trials in 3 places including Heilongjiang,Jilin and Hunan during two years and applying GC technique,the residue decline of acetochlor in rice was analyzed and its final residue was determined.[Result] The half-life of acetochlor in rice was 4.4-8.3 d,being relatively short,and it belonged to easily degradable pesticide.Under dosage condition with effective components of 600 and 900 g/hm2,after application for one time,the determined acetochlor residues in rice were lower than 0.01 mg/kg.[Conclusion] Take multiple factors into consideration,according to the treatment with application dosage of 900 g/hm2,it was suggested that the MRL value of acetochlor in rice should be ascertained as 0.02 mg/kg temporarily and acetochlor should be applied for one time.

关 键 词：ACETOCHLOR RICE RESIDUE 

分 类 号：S481.8[农业科学—农药学]