氟啶虫酰胺对甜瓜蚜虫防治效果和膳食风险评估

Control Effect and Dietary Risk Assessment of Fonicamid on Muskmelon Aphid

蚜虫是甜瓜主要害虫之一,发生较重时可降低甜瓜产量和品质,威胁产业发展。本研究开展了氟啶虫酰胺对甜瓜蚜虫1年3地的田间药效试验和1年6地的残留试验,并进行了膳食风险评估。试验结果表明:10%氟啶虫酰胺水分散粒剂能有效防治甜瓜蚜虫,膳食风险可接受,推荐使用有效剂量45~75 g/hm^(2)(制剂量30~50 g/667 m^(2)),于甜瓜蚜虫低龄若虫发生高峰期施药1次,安全间隔期为3 d。

As one of the major pests on muskmelons,aphids can reduce the yield and quality of muskmelon and threaten the development of muskmelon industry in case of severe occurrence.In this study,field efficacy trials and residual trials were conducted to determine field efficacy and evaluate the dietary risk.The results showed that 10%flonicamid WG can effectively control aphids on muskmelons with acceptable dietary risk.The recommended dosage is 45~75 g a.i./hm^(2)(30~50 g/667 m^(2)),applied at the time of highest low-instar emergency,with a 3-day preharvest interval.