WANG Shao-min,SONG Guo-chun,LI Zhe,et al.Residues and Application Safety Assessment of Difenoconazole on Cucumber and Soil[J].Northern Horticulture,2012,36(22):127-130.
苯醚甲环唑在黄瓜和土壤中的残留及安全性评价
- Title:
- Residues and Application Safety Assessment of Difenoconazole on Cucumber and Soil
- 文章编号:
- 1001-0009（2012）22-0127-04
- Keywords:
- difenoconazole; cucumber; residue dynamics; safety
- 分类号:
- S 482.2
- 文献标志码:
- A
- 摘要:
- 为了探明苯醚甲环唑的黄瓜上的残留特性和使用安全性，通过田间试验和室内检测，研究了苯醚甲环唑在黄瓜及土壤中的残留动态及最终残留量。结果表明：苯醚甲环唑在黄瓜中的半衰期为2.9~4.0 d，药后14 d消解92%以上；在土壤中的半衰期为12.5~16.1 d，药后42 d消解85%以上。以苯醚甲环唑250 g/L乳油125.0~187.5 g/hm2，连续施药4~5次，最后1次施药后2 d收获的黄瓜中苯醚甲环唑残留量均低于1 mg/kg，推荐该药在黄瓜上的安全间隔期为2 d。
- Abstract:
- In order to study the residual characteristic and safety of difenoconazole in cucumber，field experiment and laboratory testing were conducted to reveal residual degradation dynamics and the final residues of difenoconazole in cucumber and soil.The results showed that the half-life of difenoconazole in cucumber and soil were 2.9 days to 4.0 days and 12.5 days to 16.1 days，respectively；residue degradation rate in cucumber at 14 days after application was above 92%，and it was above 85% in soil at 42 days after application.When the cucumber was sprayed 4 to 5 times with 125.0 g/hm2 and 187.5 g/hm2 of difenoconazole (250 g/L EC)，the last application was done 2 days before harvesting，the residue of difenoconazole in the harvested cucumber was lower than 1 mg/kg.It was suggested that the preharvest interval of difenoconazole in cucumber was 2 days.
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备注/Memo
第一作者简介：王绍敏（1966-），女，山东冠县人，硕士，副教授，现主要从事化学保护教学及农药残留等研究工作。E-mail：wsmnyzx@126.com.