基于监测预警的小麦赤霉病药剂防治效果评价

2019年-2020年, 在安徽贵池进行了小麦赤霉病自动监测预警系统的试验示范, 并依据预测结果指导大田小麦赤霉病药剂防治试验, 以确定最佳的药剂使用量。试验结果表明, 赤霉病自动监测预警系统能够在最佳防治时期前15 d内预测小麦蜡熟期赤霉病的病穗率, 预测准确度达100%。2020年, 依据该监测预警系统预测结果及赤霉病病穗率防治指标, 在小麦扬花初期及1周后每667 m2分别使用48%氰烯·戊唑醇悬浮剂40 mL和20%氟唑菌酰羟胺悬浮剂40 mL是防治小麦赤霉病的最优药剂用量, 防治效果达95.32%。

Evaluation of control effects of pesticides on wheat scab based on monitoring and early warning system

During 2019-2020, we conducted an experimental demonstration of automatic monitoring and early warning for wheat scab in Guichi, Anhui province, and guided the field control of wheat scab based on the predicted results, so as to determine the optimal dosage of the pesticides. The results showed that the automatic monitoring and early warning system could predict the FHB (Fusarium head blight) rate of wheat in waxed-ripening stage 15 days before the optimal control time with the prediction accuracy of 100%. In 2020, based on the prediction results of the monitoring and early warning system and the control index of FHB, phenamacril·tebuconazole 48% SC 40 mL per 667 m2 in the early stage of wheat blooming and pydiflumetofen 20% SC 40 mL one week later are the optimal dosages for preventing and controlling FHB. The control efficacy was 95.32%.