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.
基金
Supported by Pesticide Residue Project in Department of Agriculture(2008F324)~~
作者简介
才爽（1986-），男，吉林白城人，硕士研究生，研究方向：农药残留与环境毒理分析。通讯作者，副教授，E-mail：xiewenming@hotmail．com。
