2种SDHI类杀菌剂对水稻恶苗病及干尖线虫病防治效果研究  

Research on the control effects of two kinds of SDHI fungicide to rice bakanae disease and white-tip nematode disease

作　　者：顾爱国[1] 杨红福[2] 冯辉[3] GU Aiguo;YANG Hongfu;FENG Hui(Jiangsu Provincial Supervising&Testing Research Institute for Products Quality,Nanjing 210007,China;Zhenjiang Institute of Agricultural Sciences in Hilly Area of Jiangsu Province,Jiangsu Jurong 212400,China;Institute of Plant Protection,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China)

机构地区：[1]江苏省产品质量监督检验研究院,南京210007 [2]江苏丘陵地区镇江农业科学研究所,江苏句容212400 [3]江苏省农业科学院植物保护研究所,南京210014

出　　处：《现代农药》2024年第6期77-80,共4页MODERN AGROCHEMICALS

基　　金：江苏省农业科技自主创新资金[CX(22)3017];句容市社会发展项目(ZA42319)。

摘　　要：恶苗病和干尖线虫病是严重危害水稻生长的重要种传病害。为明确琥珀酸脱氢酶抑制剂(SDHI)类杀菌剂对水稻恶苗病和干尖线虫病的防治效果,开展了室内毒力测定和田间小区试验。室内毒力测定结果表明,氟唑菌酰羟胺对咪鲜胺敏感和抗性恶苗病菌菌株的EC_(50)分别为0.7285、0.7736mg/L。田间试验结果表明,200g/L氟唑菌酰羟胺SC1000~4000倍液处理对水稻恶苗病的防效为84.18%~100%,但对水稻干尖线虫病无效;41.7%氟吡菌酰胺SC500~2000倍液处理对水稻恶苗病的防效为92.11%~96.75%,对水稻干尖线虫病的防效为82.49%~88.93%。Rice bakanae disease and white-tip nematode disease are two important seed-borne diseases that cause seriously harm to rice.To clarify the control effects of two kinds of SDHI fungicide on the rice seed-borne diseases,the laboratory toxicity tests and field trials were carried out.The results of laboratory toxicity tests showed that pydiflumetofen had inhibitory effects on the sensitive and resistant strains of bakanae disease,with the EC_(50) of 0.7285 and 0.7736 mg/L.The results of field trials showed that soaking seeds with pydiflumetofen 200 g/L SC 1000-4000 times liquid could achieve the control effects of 84.18%-100%on bakanae disease,but had no control effect on rice white-tip nematode disease.Soaking seeds with fluopyram 41.7%SC 500-2000 times liquid could achieve the control effects of92.11%-96.75%on bakanae disease and 82.49%-88.93%on white-tip nematode disease.

关 键 词：氟唑菌酰羟胺 氟吡菌酰胺 浸种 水稻恶苗病 干尖线虫病 防效 

分 类 号：S435.11[农业科学—农业昆虫与害虫防治]