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在林间应用25%嘧菌酯悬浮剂对落叶松落叶病和枯梢病进行共同药效测定和防治试验,结果表明:在药效测定中,200 g(a.i.)·hm-2剂量防治落叶病效果为86.0%;250g(a.i.)·hm-2和300 g(a.i.)·hm-2剂量防治枯梢病效果分别为85.4%和87.1%。在防治试验中,250 g(a.i.)·hm-2和300 g(a.i.)·hm-2剂量防治落叶病效果分别达到87.1%和88.7%;使用相同剂量药剂防治枯梢病效果分别为86.7%和88.9%。建议林间应用防治剂量为200~300 g(a.i.)·hm-2。两种病害在同一林分共同防治时,应重点考虑对枯梢病防治效果。
In the forest between 25% azoxystrobin suspension on the larch deciduous disease and blight disease joint efficacy test and control test results showed that: in the efficacy test, 200 g (ai) · hm-2 dose control deciduous The effect was 86.0%. The effect of preventing and curing blight was 85.4% and 87.1% with 250g (ai) · hm-2 and 300 g (ai) · hm-2 respectively. In the control experiment, the control effect of deciduous leaf blight with the dosage of 250 g (ai) · hm-2 and 300 g (ai) · hm-2 reached 87.1% and 88.7% respectively; the effect of using the same dose of pesticide to control blight was 86.7% And 88.9%. It is suggested that the dosage for forest application should be 200-300 g (a.i.) · hm-2. When the two diseases are jointly managed in the same stand, the prevention and control of the blight should be considered.