小麦赤霉病防治适期初探

Study on Optimum Period for Controlling Wheat Scab

为探讨小麦赤霉病防治适期,2016年采用氰烯菌酯等药剂进行了田间药效试验。结果表明,40%多·酮可湿性粉剂在齐穗期或扬花初期施用防效无显著差异,对小麦赤霉病均有一定的抑制作用。25%氰烯菌酯悬浮剂、48%氰烯·戊唑醇悬浮剂在小麦扬花初期施用的效果较在齐穗期施用的效果好,病穗率防效分别为69.84%、64.47%,病指防效分别为79.24%、75.60%。

In order to find out optimum control period for wheat scab,field trials were carried out in 2016.The results showed that carbendazim ＋ triadimefon 40% WP could control wheat scab,the control effect had no significant difference when it was used in full heading stage or in wheat flowering stage.The optimum period of phenamacril 25% SC and phenamacril ＋ tebuconazole 48% SC was the stage of wheat flowering,The control effects of flowering stage were significantly better than those of full heading stage.