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21%吡.敌畏EC防治稻飞虱药后3d的防效达95.9%～98.2%,药后7d的防效达97.3%～98.3%,药后14d的防效达85.1%～91.0%。对稻飞虱防效较为理想,并且对水稻安全。
The control effect of 21% Pyriculariae on EC was 95.9% -98.2% 3d after the control of planthopper. The control effect was 97.3% -98.3% on the 7th day and 85.1% -91.0% on the 14th day. The planthopper control effect is ideal and safe for rice.