A: First, a 1:1:100-fold Bordeaux mixture is sprayed at the beginning of the disease; secondly, the epidemic is sprayed 1:2:200 times more Bordeaux mixture or Baume degree 0.1-0.2 Lime sulfur, 80% Green Dasheng 800 Double liquid; Third, rational dense planting, scientific pruning, improve ventilation and light transmission conditions.
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