23%醚菌·氟环唑防治烟后杂交制种稻粒黑粉病药效试验

Efficiency Test of 23% Epoxiconazole and Kresomix-methyl on Grain Black Powdery Disease of Post-tobacco Hybrid Rice Seed Production

田间药效试验结果表明,23%醚菌·氟环唑悬浮剂对稻粒黑粉病有良好防效,在母本幼穗分化Ⅶ期、始穗期每667m^2各施药50 mL的处理防治效果达74.1%,是防治稻粒黑粉病较为理想的新药剂。施用23%醚菌·氟环唑对水稻生长表现安全,无发现有药害现象,可在生产上推广应用。

Field experiment showed that 23%composition with epoxiconazole and kresomix-methyl was an ideal control agent to grain black powdery disease,the control effect reached 72%with an application of 50mL per 667m2 at young panicle formationⅦstage and initial heading stage.It had no phytotoxicity and safety to female parent,could be popularized in rice seed production.