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[目的]通过对不同作用机理的药剂进行种子包衣防治玉米瘤黑粉病田间效果的比较研究,筛选出对玉米瘤黑粉病防效好的药剂。[方法]采用种子包衣法对6种药剂防治玉米瘤黑粉病的效果进行田间试验。[结果]供试药剂对瘤黑粉病均有一定的防治作用,各处理发病率均低于对照,其中28%灭菌唑和24%噻呋酰胺处理玉米种子,防治效果最好,防效为56.4%和53.25%;6%戊唑醇和44%氟唑环菌胺防效较差,仅为35.3%和27.4%。[结论]噻呋酰胺和氟唑环菌胺是用于种子处理防治玉米瘤黑粉病的新药剂,并都具有很好的防治效果。
[Objective] The purpose of this study was to compare the effects of seed coating on prevention and cure of maize smut in the field with different mechanisms of action, and to screen out the best preventive agents against maize smut. [Method] The field experiment was conducted on the effect of 6 kinds of medicaments on preventing and curing corn powdery mildew by using seed coating method. [Result] The tested medicaments had some preventive and curative effects on the rickets disease, and the morbidity of each treatment was lower than that of the control. 28% of them and 24% of thiazone had the best control effect and the control effect Were 56.4% and 53.25%, respectively. The control efficacy of 6% tebuconazole and 44% of pyraclostrobin was only 35.3% and 27.4%, respectively. [Conclusion] Thifluzamide and tetrafluzamide were new agents for preventing and curing corn powdery mildew by seed treatment, and all had good control effects.