础WP WP in low mountain middle mountain ma.75%Chlorothalonil WP could be selected to control area brown spot in high mountain area and tO 15%%adimefon control WP in area.The Xirt鼯han tobacco.planting could select 15%Triadimefon turns to WP and 50%TI圪et WP brown spot and powdery mildew in tlle field at tobacco later stage.Through taking Key words Powdery mildew:Brown apply medicaments,the control effect could be enhanced.{Conclu. … sion 1 111e research provided the scientific baSis for controlling tobacco powdery mildew and brown spot effectively. spot;