18.7%丙环·嘧菌酯对水稻纹枯病的防治效果

2015年，在中国主要水稻种植区安徽、湖北、江苏、广东和广西等地进行18.7 %丙环·嘧菌酯的水稻纹枯病防治示范试验。结果表明，18.7 %丙环·嘧菌酯在600-750 mL/hm2使用剂量下，纹枯病发病初期(丛发病率达5 %左右)时用药1次，隔10 d再用药第2次，对纹枯病的防治效果突出，且显著优于对照，对水稻安全，具有明显的增产效果。

Effect of 18.7 % Hybrid of Propiconazole and Azoxystrobin on Sheath Blight Control in Rice

In recent years, the sheath blight is one of the major disease in rice growing area throughout the country, and also sheath blight has a tendency to increase year by year. In 2015, according to the arrangement of the national agricultural technology extension service center, in Anhui, Hubei, Jiangsu, Guangdong and Guangxi etc., main rice-growing area, field experiments for 18.7% hybrid of propiconazole and azoxystrobin were arranged to verify its control efficacy against rice sheath blight. The results show that 18.7% propiconazole and azoxystrobin used in the early stage of sheath blight could strongly inhibit the spread of disease. It is safe to rice and its effect on sheath blight is superior to the control. The effect of production increase is obvious.