粉锈宁防治苹果锈病效果好苹果锈病又称赤星病，主要为害苹果叶片和果实。近两年来在我地区发生比较严重。防治其他病喷的杀菌剂对其防效不大。１９９７年在小国光苹果落花后７—１０天（５月２０日前后）对上年发病重的苹果树喷１５％粉锈宁粉剂１０００倍液或２０％液体... Triadimefon control of apple rust effect Apple rust, also known as brown spot disease, the main damage to apple leaves and fruits. In the past two years in my area more serious. Prevention of other diseases spray fungicides on its control effect is not. In 1997, after 7-10 days (May 20), the Apple Tree sprayed with 15% of powdery mildew powder and 20% liquid was sprayed on the apple trees which had a heavy incidence in the last year.