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为寻找防治水稻纹枯病的有效药剂,为大面积指导生产提供科学依据,笔者在福建省武平县万安镇五里村开展了17%四氟·嘧菌酯悬浮剂防治水稻纹枯病效果试验。试验结果表明17%四氟·嘧菌酯悬浮剂41 m L/亩在水稻孕穗末期施药1次,隔7 d再施药1次,第2次施药后14 d对水稻纹枯病的防治效果为80.11%,显著或极显著高于喷施4%四氟醚唑水乳剂78 m L/亩、17%四氟·嘧菌酯悬浮剂33 m L/亩、250 g/L嘧菌酯悬浮剂16 m L/亩、5%井冈霉素水剂250 m L/亩,且对水稻生长安全,可以做为今后防治水稻纹枯病的替代农药,在生产上进一步推广使用。
In order to find an effective agent for the control of rice sheath blight and provide a scientific basis for large-scale production guidance, the author carried out a 17% tetrazolium azoxystrobin suspension in the prevention and control of rice sheath blight in Wuli Village, Wan’an Town, Wuping County, Fujian Province . The results showed that the 17% tetraflurid-azoxystrobin suspension 41 m L / mu was applied once at the end of rice booting stage, once every 7 days and at 14 days after the second application to rice sheath blight The control effect was 80.11%, which was significantly or extremely significantly higher than that of spraying 4% tetrafluoroether azole water emulsion 78 m L / mu, 17% tetrafluoro azoxystrobin suspension 33 m L / mu, 250 g / L azoxystrobin 16 m L / mu of ester suspending agent and 250 m L / mu of 5% validamycin. It is safe for rice growth and can be used as an alternative pesticide for the control of rice sheath blight in the future and is further promoted in production.