5种复配药剂对水稻纹枯病防治效果研究

Control Effects of Five Kinds of Mixed Pesticide on Rice Sheath Blight

为有效控制水稻纹枯病,延缓病原菌对单一药剂抗性的产生,采用随机区组设计,开展了5种复配药剂对水稻纹枯病的田间药效试验。试验结果表明,17%四氟·嘧菌酯SC、27.8%噻呋·苯醚SC、14%井冈·氟环唑SC对水稻纹枯病有良好的防治效果,防效高于生产上常用药剂20%烯肟·戊唑醇SC。5种复配制剂处理能增加水稻产量,与清水对照相比达显著性差异。在寒地水稻种植地区,推荐使用17%四氟·嘧菌酯SC、27.8%噻呋·苯醚SC进行水稻纹枯病防治。

In order to control rice sheath blight and delay the resistance of single fungicide, randomized block design was used to carry out field efficacy trials by five kinds of mixed pesticide aganist rice sheath blight. The results showed that tetraconazole ＋ azoxystrobin 17% SC, thifluzamide ＋ difenoconazole 27.8% SC, jinggangmycin ＋ epoxiconazole 14% SC were effective on rice sheath blight, their control effects were higher than that of SYP-1620 ＋ tebuconazole 20% SC. Five kinds of mixed pesticide could increase rice yield, and there were significant differences between treatments and contrast. Tetraconazole ＋ azoxystrobin 17% SC and thifluzamide ＋ difenoconazole 27.8% SC were recommended to use in rice cultivation of cold region in Northeast China.