在单季稻纹枯病发病初期和盛发期用3种药剂进行防效试验,结果表明,667 m2用32.5%苯甲·嘧菌酯悬浮剂30 mL在单季稻纹枯病发病初期的用药效果好于发病盛期的用药效果,在分蘖中期和孕穗中期2次用药平均防效达91.3%。建议在单季稻纹枯病发病初期和破口抽穗期选用32.5%苯甲·嘧菌酯悬浮剂30 mL进行2次防治,可以有效控制单季稻纹枯病的发生危害。 The results showed that the effect of using 30 mL of 32.5% azoxystrobin as suspending agent of 667 m2 in the early stage of single season rice sheath blight was better than that of the control The disease-causing effect of medication, in the mid-tillering and mid-binging twice the average anti-drug effect amounted to 91.3%. It is suggested that 30 mL of 32.5% azoxystrobin suspension should be used for 2 times in the early stage of rice sheath blight and in the stage of breaking heading stage, which can effectively control the occurrence of single crop of rice sheath blight.