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[目的]由Alternaria alternata引起的金叶女贞黑斑病近年在河南省南阳市严重发生。试验探讨了代森锰锌与百菌清混用对该病的防治效果。[方法]2种供试药剂的单剂及其混配剂不同质量浓度喷雾处理,进行小区防治试验。[结果]与单剂处理区相比,喷施混剂(1400 g a.i./hm2代森锰锌+750 g a.i./hm2百菌清)处理区的防治效果最佳,达70.5%。单剂不同质量浓度梯度区的防治效果差异性不显著。[结论]代森锰锌与百菌清的混用可提高对金叶女贞黑斑病的防治效果。
[Objective] In recent years, Black Leaf Blight caused by Alternaria alternata occurred seriously in Nanyang City, Henan Province. Test to explore the mancozeb and chlorothalonol mixed with the prevention and treatment of the disease. [Method] A single dose of two kinds of test agents and their mixed agents were sprayed with different mass concentration to carry out cell prevention and control experiment. [Result] Compared with the single treatment zone, the best control effect was achieved in the treated zone (1400 g a.i./hm2 Mancozeb +750 g a.i./hm2 chlorothalonil), reaching 70.5%. The difference of the control effect of single-dose different concentration gradient zone was not significant. [Conclusion] The combination of mancozeb and chlorothalonil could improve the prevention and cure effect of Vaccinium.