几种杀菌剂对水稻纹枯病及稻瘟病田间药效评价

Field Control Effect of Several Fungicides Against Rice Blast and Sheath Blight

水稻稻瘟病及纹枯病是农业生产上的重要病害,为筛选出高效低毒的化学药剂。本文采用田间小区试验使用多种杀菌剂对水稻稻瘟病及纹枯病进行药效比较。结果表明,吡唑醚菌酯乳油对水稻稻瘟病的防治效果及增产率均具有较好的作用,肟菌·戊唑醇水分散颗粒剂次之。肟菌·戊唑醇水分散颗粒剂20 g/667 m^2对水稻纹枯病的防治效果最好,吡唑醚菌酯乳油的增产率最高。因此吡唑醚菌酯乳油及肟菌·戊唑醇水分散颗粒剂可作为水稻稻瘟病及纹枯病的有效药剂。

Rice blast and sheath blight were important disease in agricultural production,the study aims to screen out new high efficiency and low toxicity fungicides.The paper used several fungicides on rice blast and sheath blight field control efficacy comparison.The results showed that pyrazolemethamid EC could control rice blast and increase field-growth rate,trifloxystrobin.tebuconazole GR followed.Used trifloxystrobin.tebuconazole GR of 20 g/667 m2 was the best for rice sheath blight,the pyrazolemethamid EC had highest increase field-growth rate.The pyrazolemethamid EC and trifloxystrobin.tebuconazole GR can be used for controlled the rice blast and sheath blight.