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描述了新疆黑穗醋栗白粉病危害叶片、新梢、果实的主要症状。根据病原形态特点及寄主范围 ,明确本病病原菌为醋栗单丝壳菌 [Sphaerothecamors -uvae(Schw .)Berketcurt]。该病在新疆天山北坡逆温带 6月初发病 ,6月中旬至 7月中下旬为盛发期 ,8月份以后逐渐衰退。适发温度 15～ 2 5℃ ,高温高湿是本病流行的重要条件。防治研究表明 ,发病初期和以后每隔 15～ 2 0d连续喷洒 2～ 3次粉锈宁 80 0倍液或 10 0 0倍液 ,有很好的预防和治疗效果
Describes the main symptoms of powdery mildew in black currant leaves, shoots and fruits in Xinjiang. According to the characteristics of the pathogen and the host range, the pathogen of the disease was identified as Sphaerothecamors -uvae (Schw.) Berketcurt. The disease in the northern slope of Tianshan Mountains in Xinjiang in early June onset, mid-June to mid-July for the Shengfa period, gradually declining after August. Adaptation temperature 15 ~ 25 ℃, high temperature and humidity is an important condition for the epidemic. Prevention and control studies have shown that the early onset and after every 15 ~ 20d continuous spraying of 2 to 3 times triadimefon 80O times or 100 times, have a good preventive and therapeutic effect