27.12%铜高尚悬浮剂防治稻曲病田间药效试验

Field Efficacy of 27.12% Cuproxat SC against Rice False Smut Ustilaginoidea oryzae

稻曲病是水稻重要病害之一,本文研究了铜高尚悬浮剂对稻曲病的防治效果。试验结果表明:27.12%铜高尚悬浮剂于水稻破口期施药一次,防治稻曲病效果达81.84%,较常规使用药剂20%井冈霉素可溶性粉剂66.81%的防效的差异显著。

Rice false smut（Ustilaginoidea oryzae）is one of important rice diseases. A field trial on control efficacy of 27.12% cuproxat SC against rice false smut was carried out using spraying application at Chuxiong of Yunnan province. The trial results showed that the control efficacy of 27.12% cuproxat SC against rice false smut reached 81.84% when spraying 27.12% cuproxat SC to rice plants once in the early heading stage at the application rate of 50 mL/667 m2,and the control efficacy of the conventional fungicide 20% validamycin soluble powder against rice false smut was 66.81%. Therefore,there was a significant difference between them.