期刊文献+

敌敌畏在胡萝卜中的残留分析及消解动态 预览

Residue Analysis and Degradation Dynamics of Dichlorvos in Carrot
在线阅读 下载PDF
分享 导出
摘要 [目的]明确敌敌畏在胡萝卜上的残留及消解动态。[方法]采用田间试验,建立敌敌畏在胡萝卜中的残留分析方法。[结果]将77.5%敌敌畏乳油按1800ga.i./hm^2施药3次后,3d后在胡萝卜和土壤中均未检出,消解快,不会造成累积性残留;当敌敌畏按1200和1800ga.i./hm^2,分别施药2次和3次,施药间隔为7d,于末次施药后5、7和14d采收胡萝卜,其残留量为0.010~0.112mg/kg,低于我国规定的敌敌畏在深色蔬菜中的最大残留限量值0.2mg/kg。[结论]建议在使用77.5%敌敌畏乳油防治胡萝卜病害时,用药量不超过有效成分1200ga.i./hm^2,最多施药3次,采收安全间隔期为7d。 [Objective]To clarify the residue and digestion dynamics of dichlorvos in carrot.[Method]A standardized field experiment was conducted and a method for the residue analysis of dichlorvos in carrot was established.[Result]77.5% dichlorvos EC was not detected in carrot and soil 3 days after application with 1800 g A. i./hm^2.The pesticide degradated quickly and did not cause accumulative residue.When the dichlorvos was divided into 2 and 3 times with 1200 and 1800 g A. i./hm^2 respectively,the interval of the dosage was 7 d,and the carrots were collected from 5,7 and 14 d after the last dosage,and the detectable residual amount was between 0.010 and 0.112 mg/kg.This concentration was lower than the MRL (0.2 mg/kg) of dichlorvos in dark vegetables.[Conclusion]It is suggested that the dosage of dichlorvos will not exceed 1200 g A. i./hm^2,the maximum application time will not exceed 3 times,and the safe interval is 7 days,when using recommended 77.5% dichlorvos EC to control carrot disease.
作者 曹倩 王秋华 蒋紫烟 廖婵娟 苏龙 王寒 CAO Qian;WANG Qiu-hua;JIANG Zi-yan(International College,Hunan Agricultural University,Changsha,Hunan 410128;College of Resources & Environment,Hunan Agricultural University,Changsha,Hunan 410128)
出处 《安徽农业科学》 CAS 2019年第2期185-187,190共4页 Journal of Anhui Agricultural Sciences
基金 湖南省教育厅一般项目(17C0761) 农业部农业行业标准制定和修订项目(农财发2016-D850)。
关键词 敌敌畏 胡萝卜 残留 消解 Dichlorvos Carrot Residue Degradatation
作者简介 曹倩(1997-),女,四川绵阳人,从事环境污染物检测分析技术研究;通信作者:廖婵娟,讲师,从事环境污染物检测分析技术研究。
  • 相关文献

参考文献8

二级参考文献107

共引文献44

投稿分析

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部 意见反馈