吡丙醚的残效期及低浓度添食对家蚕结茧影响试验  

The Residual Period of Pyriproxyfen and Effect of Low Concentration of Pyriproxyfen on the Cocooning of Silkworm

作　　者：刘文光[1] 刘惠芬[1] 衣葵花[1] 娄齐年[1] 王照红[1] 李云芝[1] LIU Wenguang;LIU Huifen;YI Kuihua;LOU Qinia n;WANG Zhaohong;LI Yunzhi(Shandong Sericultural Research Institute,264002,Yantai,Shandong,China)

机构地区：[1]山东省蚕业研究所,山东烟台264002

出　　处：《北方蚕业》2018年第4期5-8,共4页North Sericulture

基　　金：山东省现代农业产业技术体系蚕桑产业创新团队建设项目(SDAIT-18-03)

摘　　要：为探讨大田农药吡丙醚对蚕茧生产的影响,进行了低浓度吡丙醚添食试验。结果表明,吡丙醚对家蚕结茧影响较大,5龄第4天添食1.00×10^(-3) mg/L、5.00×10^(-4) mg/L、2.50×10^(-4) mg/L的吡丙醚24 h,对家蚕的结茧有影响,但到5龄第14天能够全部结茧;用1.00×10^(-2) mg/L、1.00×10^(-3) mg/L的吡丙醚,在5龄不同时间分别添食24 h,添食越晚,结茧率越低;从5龄第4天连续添食6.25×10^(-5) mg/L、3.13×10^(-5) mg/L的吡丙醚、从5龄第5天连续添食6.25×10^(-5) mg/L的吡丙醚,均可造成家蚕不结茧。吡丙醚在桑叶上的残效期超过47 d。To understand the effect of pyriproxyfen on the growth of silkworms,a feeding test with low concentration of pyriproxyfen was carried out.Results show that the pyriproxyfen at low concentration has a great influence on the cocooning of silkworm.The cocooning of silkworm is affected by adding pyriproxyfen of 1.00×10^-3 mg/L,5.00×10^-3 mg/L and 2.50×10^-4 mg/L for 24 hours on the 4th day of the 5th instar,but all silkworms cocoon on the 14th day of the 5th instar.Adding pyriproxyfen of 1.00×10^-2 mg/L and 1.00×10^-3 mg/L at different time on the 5th instar for 24h,the cocooning rate is lowering with the later feeding.Silkworms can not cocoon by continuous feeding pyriproxyfen of 6.25×10^-5 mg/L and 3.13×10^-5g mg/L from the 4th day of the 5th instar and feeding pyriproxyfen of 6.25×10^-5 mg/L from the 5th day of the 5th instar.The residual period of pyriproxyfen on mulberry leaves is more than 47 days.

关 键 词：杀虫剂 吡丙醚 家蚕 结茧 残效期 

分 类 号：S884.96[农业科学—特种经济动物饲养]