几种常用杀虫剂在洋葱上的残留降解动态  

Residue degradation dynamics of several insecticides in onion

作　　者：冯明祥[1] 陈振德[1] 袁玉伟[1] 陈雪辉[1] 连之新[1] 

机构地区：[1]青岛市农业科学研究院,山东青岛266100

出　　处：《农药》2006年第5期337-338,341,共3页Agrochemicals

基　　金：由青岛市科技局重点招标课题(03-1-NSH-23)资助

摘　　要：研究了毒死蜱、敌百虫和氯氰菊酯不同施药方法在洋葱上的残留降解动态。结果表明,毒死蜱喷雾在洋葱上的残留期较长,而采用药液灌根法施药,其残留期较短,残留量较少,即使在施药后第1d取样检测,残留量仍远远低于国家规定标准;敌百虫采用灌根法施药,在葱头中的残留量很低,施药后第1d取样检测,其残留量远远低于国家规定标准,这2种药剂可以作为防治地下害虫的良好杀虫剂。氯氰菊酯采用喷雾法施药,即使在施药后第1d,也检测不到农药残留,因此,是一种良好的喷雾用杀虫剂。Degradation dynamics of chlorpyrifos, trichlorphon, and cypermethrin residues in onion were investigated. Chlorpyrifos residues showed relatively long residual when sprayed onto onions. However, residues were relatively short-lived and residue levels were low when applied by root drench, resulting in levels significantly lower than Chinese national standards even when sampled 1 d after application. Trichlorphon residue levels sampled 1 d after application were much lower than national standards when the pesticide was applied to onions by root drench. These two insecticides are effective in controlling soil-borne insect pests. Residues of cypermethrin were undetectable even when sampling 1 d after spray application. Thus, this insecticide is especially suitable for spray application.

关 键 词：毒死蜱 敌百虫 氯氰菊酯 农药残留 洋葱 

分 类 号：TQ450.263[化学工程—农药化工]