咪鲜胺在冬枣中的残留及消解动态  

Residues anddecline of Prochloraz in Jujube

作　　者：韩帅兵 吴亚玉[1] 张耀中[1] 李向阳[1] 于淼 周力[1] Han Shuaibing;Wu Yayu;Zhang Yaozhong;Li Xiangyang;Yu Miao;Zhou Li(Shandong Institute of the Control of Agrochemicals,Jinan Shandong 250100,China)

机构地区：[1]山东省农药检定所

出　　处：《农药科学与管理》2019年第4期34-38,共5页Pesticide Science and Administration

摘　　要：为评价咪鲜胺在冬枣上使用的安全性,开展了咪鲜胺在冬枣中的残留量及消解动态研究,进行了1年4地田间试验。消解动态试验按咪鲜胺667倍液(675mg/kg,1.5倍推荐最高制剂量)施药;最终残留试验按咪鲜胺1 000倍液(450mg/kg),高剂量按制剂量667倍液(675mg/kg,1.5倍推荐最高制剂量)施药,施药3~4次,施药间隔7d,施药后7、14、21、28d采集冬枣样品。利用GC-ECD定量分析检测。检测结果表明:咪鲜胺在冬枣中的半衰期为5.7d,咪鲜胺在距离最后施药28d采样时冬枣中残留量为0.16?4.57mg/kg。In order to evaluate the safety of the use of prochloraz in jujube,a supervised trial experiment was conducted at four sitesduring one year to study the residues anddecline of prochloraz in jujube.Fordecline trials,prochloraz was sprayed at the concentration of 667 timesdilution(675mg/kg,1.5times recommended concentrations).For final residue trials,prochloraz was applied 3~4 times with the spraying interval 7d at 1 000 timesdilution(450mg/kg)and 667 timesdilution(675mg/kg)respectively,corresponding to recommended concentration and 1.5 times recommended concentration.Jujube were sampled on 7、14、21 and 28d after application.Prochloraz was analyzed by GC-ECD.The results of thedecline study showed that the half-life values(tl/2)were 5.7d in Shandong.After 28days of the last application,the ultimate residues of prochloraz in jujube were at the range of 0.16~4.57 mg/kg.

关 键 词：咪鲜胺 冬枣 残留 消解动态 

分 类 号：S482.2[农业科学—农药学] S481.8[农业科学—植物保护]