吴正宝等

摘要[目的]评价吡虫啉种衣剂及其与氟虫双酰胺混用对水稻灰飞虱及黑条矮缩病等病毒病的控制效果。[方法]通过田间小区试验研究了吡虫啉种衣剂及其与氟虫双酰胺混用控制水稻灰飞虱及黑条矮缩病等病毒病的效果。[结果]吡虫啉600 FS 83.3～125.0 ml/hm2及其与氟虫双酰胺混用400 FS 150.0～300.0 ml/hm2在灰飞虱和黑条矮缩病重发生情况下，秧田虫口防效高达45%～55%，大田病害防效在28.71%～56.52%，结合无纺布覆盖育苗以及秧田期防治灰飞虱，可有效控制病毒病的发生。[结论]为吡虫啉种衣剂的应用及水稻病毒病的防治提供了理论依据。

关键词吡虫啉；种衣剂；灰飞虱；黑条矮缩病；病毒病

中图分类号S435.111.4+2文献标识码A文章编号0517-6611（2014）36-13050-03

Abstract [Objective] The aim was to evaluate efficacy of Imidacloprid FS and its mixer with Flubendiamide FS on L. striatellus and RBSDV. [Method] The effects of Imidacloprid FS and its mixer with Flubendiamide FS on L. striatellus and RBSDV were studied through field plot experiment. [Result] After Imidacloprid 600 FS at 83.3-125.0 ml/hm2 and its mixer with Flubendiamide 400 FS at 150.0-300.0 ml/hm2 were used to control L. striatellus and RBSDV， the efficiency of seedling bed reached 45.00%-55.00%， and the efficiency of rice field diseases reached 28.71%56.52%. Combining with nonwoven fabric covering seedling as well as controlling L. striatellus at seedling stage， rice stripe disease could be controlled effectively. [Conclusion] The results provide theoretical basis for the application of Imidacloprid FS and the control of rice virus diseases.

Key words Imidacloprid； Seed coating agent； Laodelphax striatellus； Rice blackstreaked dwarf disease； Rice stripe disease

進入21世纪，水稻条纹叶枯病（RSV）在扬州丘陵地区发生抬头，随后发生面迅速扩大，发生程度、为害损失逐年加重，2004年进入暴发流行阶段[1]，通过推广抗病品种等一系列综防措施，发生程度有所减轻，但黑条矮缩病（RBSDV）又突然暴发，2011年扬州丘陵地区平均病穴率3.82%，幅度05%～14.0%，高的田块达50.0%，严重田块占发生面积的857%。为此，江苏省仪征市大仪镇农业综合服务中心参加了扬州市2005年组织的“灰飞虱传水稻病毒病绿色防控技术集成与推广”项目组，于2011年开展了应用吡虫啉种衣剂控制传毒媒介灰飞虱（Laodelphax striatellus）及黑条矮缩病的研究，旨在为水稻病虫害防治提供理论依据。

1材料与方法

1.1试验地概况

试验地设在江苏省仪征市新城镇三茅村刘正富农户一丘陵区冲田中，壤土，有机质19 g/kg，pH6.7，秧田面积233.30 m2，移栽大田1 467.00 m2。……