室内 5 %广枯灵水剂对水稻稻瘟病菌菌丝、孢子的毒力测定结果表明 :新杀菌剂 5 %广枯灵水剂不但能抑制稻瘟病菌菌丝的生长 ,而且对稻瘟病孢子萌发的抑制作用较好。 5 %广枯灵水剂 1 0 0mg/L的抑菌效果为6 7 1 % ;40 0mg/L的抑菌效果可达 1 0 0 %。对照药剂 2 0 %三环唑 40 0mg/L的抑菌效果仅为 84 4 % ,5 %广枯灵水剂对稻瘟病菌孢子萌发的BC50 值 47 99mg/L ;2 0 %三环唑BC50 值 5 6 4 3mg/L ;5 %广枯灵水剂抑制稻瘟病菌菌丝生长 ,抑制稻瘟病菌孢子萌发以及BC50 值均明显好于当前广泛使用的 2 0 %三环唑 The results showed that the new fungicide 5% Guangquanyide could not only inhibit the growth of the mycelia of Magnaporthe grisea, but also inhibit the growth of the blast of Magnaporthe grisea Germination inhibition is better. The antibacterial effect of 5% Guangqu Ling agent at 100mg / L was 6 7 1%, and the antibacterial effect at 40 0mg / L was 100%. The antibacterial effect of 20% tricyclazole 40 0 ​​mg / L was only 84 4%. The BC50 value of 5% Wulongling agent against spore germination of Magnaporthe grisea was 47 99 mg / L, while that of 20% tricyclazole BC50 Value 5 6 4 3mg / L; 5% Guangqu Ling watering agent to inhibit the mycelial growth of Magnaporthe grisea, inhibiting spore germination and BC50 values ​​were significantly better than the currently widely used 20% tricyclazole