【摘要】 通过田间先施药后接种的方法,测定了4种杀菌剂对玉米弯孢菌叶斑病菌防治持效期的研究。结果表明:代森锰锌的持效期较长,可达10 d以上,施药后15 d,保护作用效果仍在48%以上;甲基托布津、百可得和百菌清3种药剂的持效期较短,可维持7 d。更多还原

【Abstract】 The effective duration of four fungicides used to protect maize from the infection of Curvularia lunata was investigated via conidial inoculation at different time after application of the fungicides.The results showed that the fungicide of mancozeb had long protective effect.Its effective duration can reach above 10 days and the effect of the fungicide on the prevention the plant from disease infection was above 48% after 15 days.The protecting effect of three system fungicides: thiophanate-methyl,Belkute and chlorothalonil,lasted for 7days.更多还原