异菌脲对桃树褐腐病防效和膳食风险评估  

Control Effect and Dietary Risk Assessment of Iprodione against the Brown Rot on Peach

作　　者：张颂函 陈秀[1] 李玉博[2] 黄兰淇[1] 高永东[1] 赵莉[1] ZHANG Songhan;CHEN Xiu;LI Yubo;HUANG Lanqi;GAO Yongdong;ZHAO Li(Agriculture Technology Extension Service Center of Shanghai,Shanghai201103,China;Shanghai Academy of Agricultural Sciences,Shanghai201106,China)

机构地区：[1]上海市农业技术推广服务中心,上海201103 [2]上海市农业科学院,上海201106

出　　处：《现代农药》2023年第1期68-72,共5页MODERN AGROCHEMICALS

基　　金：上海市2022年度科技兴农项目(沪农科推字(2022)第2-4号)。

摘　　要：褐腐病是桃树主要病害之一,发生较重时可降低桃树产量和品质,威胁桃产业发展。本研究开展了异菌脲对桃树褐腐病1年3地的田间药效试验和1年8地的农药残留试验,进行了膳食风险评估。试验结果表明,50%异菌脲WP能有效防治桃树褐腐病,防效最高可达85.53%;药后7~12 d,药剂在果肉中残留量为0.046~3.920 mg/kg,小于最大残留限量10 mg/kg;RQ为26.5%,膳食风险可接受。推荐50%异菌脲WP使用有效剂量为333.3~500 mg/kg(制剂量1000~1500倍液),于桃树谢花后开始施药,间隔7~14 d施药1次,连续施药3次,安全间隔期为7 d。The brown rot is one of the main diseases on peach,which can reduce the yield and quality of peach and threaten the development of related peach industry when disease was serious.In this study,field efficacy trials and residual tests were conducted to evaluate the field efficacy and the dietary risk of iprodione.The results showed that iprodione 50%WP could effectively control the disease with maximum value of 85.53%.The iprodione concentrations in pulp after 7-21 d were 0.046-3.920 mg/kg,which were less than iprodione's MRL(10 mg/kg)on peach.RQ was 26.5%,and the dietary risk was acceptable.The recommended dosage is 333.3-500 mg/kg(1000-1500 times).The first suitable applying time is after anthesis,totally three times in a row with a interval of 7-14 d.The preharvest interval is 7 d.

关 键 词：桃树 褐腐病 异菌脲 防效 膳食风险 

分 类 号：TQ450.2[化学工程—农药化工]