戊唑醇对小麦赤霉病的田间防治和增产效果

Effects of Tebuconazole Treatment on Severity of Wheat Scab( Fusarium graminearum) in Field and Wheat Grain Yield

通过2013年田间药效试验,研究了不同浓度戊唑醇对小麦赤霉病的田间防治和增产效果。结果表明:随着药剂戊唑醇用量的逐级增加,赤霉病病情指数逐渐减小,病害发生逐渐减轻,药剂防治效果逐级显著。与对照相比,喷施240g/hm2戊唑醇或喷施90 g/hm2戊唑醇与375 g/hm2多菌灵的混合药剂可分别使小麦赤霉病病情指数降低60.84%和67.09%,病穗率降低34.32%和35.61%,产量增加3.19%和5.70%,说明戊唑醇对赤霉病防治效果较好,且对小麦生长安全,可以作为防治小麦赤霉病的替代品种。

The effects of spraying Tebuconazole at different dosages on the severity of wheat scab （ Fusarium graminearum） in field and wheat grain yield were studied in 2013. The results indicated that： along with the increase in the dosage of Tebuconazole, the disease index and severity of wheat scab decreased gradually, and the control effect of this fungicide on the disease increased gradually. As compared with untreated control, spraying 240 g/hm2 Tebuconazole or 90 g/hm2 Tebuconazole ＋ 375 g/hm2 Carben- dazim reduced the disease index by 60.84% or 67.09% respectively, decreased the diseased spike rate by 34.32% or 35.61% re- spectively, and increased the grain yield by 3.19% or 5.70% separately. The above results demonstrated that Tebuconazole had a better control effect on wheat scab, it was safe to wheat growth, and it could be used as a substitute for the control of wheat scab.