对52.5%三环·丙环唑悬乳剂不同剂量对水稻纹枯病的田间防效进行研究,结果表明:52.5%三环·丙环唑悬乳剂对水稻纹枯病具有十分显著的防治效果,750 g/hm2的用量在发病初期和中期防治2次,其防效可达80%以上,高于常用药剂5%己唑醇悬浮剂。用52.5%三环·丙环唑防治水稻纹枯病,预防作用好于治疗作用。 The field control efficacy of 52.5% tricyclazacil and propiconazole at different doses on rice sheath blight was studied. The results showed that the 52.5% tricyclic and propiconazole suspension had a very significant control effect on rice sheath blight, The dosage of 750 g / hm2 was controlled twice in the early and middle stages of the disease. The control effect was more than 80%, higher than that of the commonly used 5% hexaconazole suspension. Prevention and control of rice sheath blight with 52.5% tricycline and propiconazole, the preventive effect is better than the therapeutic effect.