几种杀菌剂对黑龙江高寒地区玉米大斑病的防治效果

Control Effect of Several Kinds of Bactericides on Exserohilum turcicum in Cold Area of Heilongjiang Province

【目的】通过对黑龙江省高寒地区2个试验地点的玉米大斑病防治试验，拟筛选出新型的防治玉米大斑病的最佳药剂。【结果】供试药剂均能在一定程度上有效地控制玉米大斑病，其中36％烯肟菌胺·氟环唑悬浮剂、400g／L氟硅唑乳油、12．5％氟环唑悬浮剂、250g/L吡唑醚菌酯乳油等对玉米大斑病的防治效果及持续控制作用较好，持效期可达40—50d，田间示范试验结果显示，玉米大喇叭口期一次施药可以保护玉米不受大斑病的侵染危害，并且有一定增产效果。

[Aims] This article aims to select new optimal fungicides by field trial in the cold area of Heilongjiang province for the prevention and control ofExserohilum turcicum. [Results] Plot experiment results indicated that the tested fungicides can all effectively control Exserohilum turcicum to a certain extent, in which SYP-1620 · epoxiconazole 36% SC, fluorosilicates （fusion） 400 g/L EC, pyraclostrobin 250 g/L EC and epoxiconazole 12.5% SC had better controlling effect and persistence up to 40-50 days. The field trial indicated that the selected agent can protect the corn from the Exserohilum turcicum and increase the production.