18%苯甲·丙环唑WG防治水稻纹枯病的田间药效试验

进行18%苯甲·丙环唑WG防治水稻纹枯病的药效试验,结果表明:每667 m2使用18%苯甲.丙环唑WG 30、40、50 g第2次药后15 d对水稻纹枯病的防效分别为78.68%、80.08%和84.36%;每667 m2使用18%苯甲.丙环唑WG 50 g及40 g的防效较高,且对作物生长无不良的影响,药后较安全,对其他生物、其他病虫害及其他非靶标生物均无影响。生产上建议每667 m2使用18%苯甲.丙环唑WG 40～50 g(制剂量)防治水稻纹枯病,于水稻分蘖盛期施药。

Drug efficiency of 18 % benzoyl propiconazole WG against rice sheath blight in field trials

A field trial of drug efficiency using 18% benzoyl propiconazole WG against rice sheath blight was carried out.The results showed that the control efficiency of 18% benzoyl propiconazole WG with the dosages of 30 g,40 g and 50 g per 667 m2 was 78.68%,80.08% and 84.36%,respectively,in the fifteenth day after the second medication.The dosages of 50 g and 40 g had good control efficiency(84.36% and 80.08%,respectively) and had no bad effect on the growth of crops,safety after treating.It also had no harmfull effect on the other organism,insects and non-target organism.In the production practice,it was suggested that to control rice sheath blight by using 18% benzoyl propiconazole WG with dosages of 40-50 g per 667 m2,the pesticide was applied at peak of rice tillering stage.