对定西市马铃薯示范区以及周围农户2019年马铃薯块茎和土壤中嘧菌酯、吡唑醚菌酯、吡虫啉的残留进行了测定。结果表明，嘧菌酯、吡唑醚菌酯、吡虫啉在马铃薯块茎中的残留量分别为0.044、ND、ND mg/kg，均低于对照组的浓度0.067、0.218、0.009 3 mg/kg，并低于国际食品法典委员会(CAC)规定的最高残留量0.10、0.02、0.50 mg/kg。此外，在示范区马铃薯土壤中未检出嘧菌酯、吡唑醚菌酯、吡虫啉。表明示范区嘧菌酯、吡唑醚菌酯以及吡虫啉的使用，在马铃薯上是安全的，且对土壤无污染。

In this study， the residues of azoxystrobin， pyrazolide and imidacloprid in potato tuber and soil in Dingxi demonstration and surrounding farms in 2019 were measured. The results showed that the residue of azoxystrobin， pyrazolide and imidacloprid in potato tuber were 0.044， ND and ND mg/kg， respectively， which were lower than the concentrations of 0.067 mg/kg， 0.218 mg/kg and 0.009 3 mg/kg in the surrounding farms， and also lower than the maximum residue limit (MRL) of 0.1 mg/kg， 0.02 mg/kg and 0.5 mg/kg as determined in the International Food Code Commission(CAC). Moreover， azoxystrobin， pyrazolide and imidacloprid were not detected in potato soil in the demonstration area. The results showed that the application scheme of pyrazoides, pyrazoides and imidacloprid in the demonstration area was safe in potato and had no pollution to the soil.

S532

国家重点研发计划(2018YFD0800806)。