How to prevent and control the Daqing plague?

To be exact, it is early blight of Daqing, which is treated with 50% azoxystrobin water dispersant 2000 times, 58% thiophanate-methyl wettable powder 600 times, 69% enoximide wettable powder 500 times, 80% mancozeb wettable powder 700 times, 72% thiophanate-methyl wettable powder 600 times or 50% foscarnet sodium 600 times.