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Position: Home > Articles > Dynamics of imidacloprid residues in honeysuckles and soils Plant Protection 2011,37 (1) 90-92

吡虫啉在金银花及土壤中的残留动态研究

作  者:
刘清浩;刘新涛;倪云霞;刘红彦;张玉军
单  位:
河南工业大学;河南省农业科学院植物保护研究所
关键词:
吡虫啉;高效液相色谱;金银花;土壤;残留动态
摘  要:
采用HPLC-DAD方法对吡虫啉在金银花及土壤中的残留动态进行研究。该方法最小检出量为0.021 2 ng,样品添加回收率为80.9%~84.6%,变异系数为7.74%~18.15%。研究结果表明:吡虫啉在金银花和土壤中的半衰期分别为1.52~4.65、11.07~19.09 d。建议金银花中吡虫啉的最大残留限量(MRL)为3.0 mg/kg;10%吡虫啉可湿性粉剂防治金银花蚜虫,用药量为30 g/hm2(有效成分),采用喷雾的施药方法,在每茬花中最多施药2次,安全施药间隔期为7 d。
译  名:
Dynamics of imidacloprid residues in honeysuckles and soils
作  者:
Liu Qinghao1,2,Liu Xintao1,Ni Yunxia1,Liu Hongyan1,Zhang Yujun3(1.Institute of Plant Protection,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China;2.North University of China,Taiyuan 030051,China;3.Henan University of Technology,Zhengzhou 450052,China)
关键词:
imidacloprid;HPLC;honeysuckle;soil;residue dynamics
摘  要:
HPLC-DAD was developed to study the residual dynamics and the final residues of imidacloprid in honeysuckles and soils.The lowest detection limit of this method was 0.021 2 ng.The recovery of imidacloprid added to honeysuckle and soil samples ranged from 80.9% to 84.6% with a coefficient of variation of 7.74% to 18.15%.The results showed that the degradation half life of imidacloprid was 1.52-4.65 d in honeysuckles and 11.07-19.09 d in soils.It was suggested that the MRL of imidacloprid in honeysuckles was 3.0 mg/kg.When 10% imidacloprid WP was applied to control the aphids on honeysuckles at 30 g/hm2(effective ingredients),one or two times of applications were allowed during each flowering period,with the safe interval of seven days from harvest.

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