叶面肥对烟叶中4种杀虫剂残留降解的影响

Effects of Foliar Fertilizer on Pesticide Residue Degradation in Tobacco Leaves

叶面肥与农药混用是农业生产中一种新兴的药肥施用模式,但其对农药残留的影响尚待进一步研究。本试验开展了叶面肥与农药不同施用模式试验,采用QuEChERS和高效液相色谱-串联质谱(HPLC-MS/MS)相结合的检测方法,探讨叶面肥对烟叶中氯虫苯甲酰胺、氟啶虫酰胺、氟苯虫酰胺和氟啶虫胺腈4种杀虫剂残留降解速率的影响。结果表明,施用叶面肥对氯虫苯甲酰胺残留降解促进作用显著,对氟啶虫酰胺、氟苯虫酰胺和氟啶虫胺腈残留降解有一定促进作用,且叶面肥稀释1000倍处理效果最佳。研究结果为"药肥合一"模式降低烟叶农药残留水平,提高烟叶品质提供基础数据。

The mixed use of fertilizers and pesticides is a new agricultural practice,but their effects on pesticide degradation is not investigated.In this study,a multi-residue analysis method based on QuEChERS and HPLC-MS/MS was developed and the field trials on different application patterns of pesticides and fertilizers were carried out to study the effects of foliar fertilizer on degradation rate of four pesticides,including chlorantraniliprole,flonicamid,flubendiamide and sulfoxflor.The results showed that the application of foliar fertilizer has a significant effect on promoting the degradation of chlorantraniliprole.Accompanied by there was a little effect on degradation of flonicamid,flubendiamide and sulfoxaflor,the best dilution concentration is1000multiple.The results provide the basic data for reducing of tobacco pesticide residues and improving the quality of tobacco leaves through the"combination of pesticide and fertilizer"model.