满穗等防治水稻纹枯病效果试验

Test on Control of Rice Sheath Blight with Thifluzamide 23%SC

试验表明满穗对水稻纹枯病有良好防效 ,持效期长。 2 3%满穗悬浮剂 2 2 5～ 30 0ml/hm2 防治晚稻纹枯病 ,于水稻孕穗初期施药 ,药后 30天株防效为 6 8.97%～ 80 .90 % ;于孕穗末期施药 ,药后 30天株防效为 6 6 .2 3%～ 6 8.5 1% ,病指防效为 71.73%～ 72 .2 0 % ,优于井冈霉素等常用药剂。

The field trial results showed that thifluzamide 23% SC is very effective to control rice sheath blight (Rhizoctonia Solani Palo),the persistence was sustained over 30 days.The control effect of 225ml/ha to 300ml/ha,of thifluzamide 23%SC was 66.23%to 68.51%at 30 days after treatment.The control effect of disease exponential was 71.73% to 72.20%.The effect rate was higher than Jingangmeisu.