月季黑斑病在中国很多地方均有发生。该病为害月季，使叶片枯黄、早落，引起月季当年第二次发叶，削弱植株的生长势，降低了切花产量。防治此病已成为月季生产亟待解决的问题。１症状月季黑斑病主要侵害月季叶片，也侵害叶柄、叶脉、嫩梢等部位。发病初期，叶片正面出现褐色小 Rose black spots in many parts of China have occurred. The disease damaging roses, the leaves yellow, early fall, causing the second leaf of the year rose, weakening the growth potential of plants, reducing the cut flower yield. Prevention and treatment of the disease has become a problem to be solved in the production of roses. 1 Symptoms Rose black spot disease mainly affects rose leaves, but also against petioles, veins, tender shoots and other parts. Early onset, the emergence of small brown leaves