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黄芪白粉病的发生与温度关系密切。在6月下旬日均温度18℃时开始发生,当7月下旬至8月日均温约20℃时快速扩散,到9月中旬日均温度低于16℃时逐渐减缓。降雨也会加剧病害发展。选用5种杀菌剂,进行了黄芪白粉病田间防治试验。结果表明,5%烯唑醇ME和20%丙环唑ME防治效果较好。防效分别达到84.53%和81.19%。25%腈菌唑EC、10%苯醚甲环唑ME和25%三唑酮WP的防治效果分别为76.44%、73.66%和73.63%。
The occurrence of astragalus powdery mildew is closely related to the temperature. In late June the average daily temperature of 18 ℃ began to occur, when the average daily temperature from late July to August when about 20 ℃ spread rapidly, when the average daily temperature in mid-September when the temperature is below 16 ℃ gradually slowed down. Rainfall can also aggravate disease development. Five kinds of fungicides were selected for field control of Astragalus powdery mildew. The results showed that 5% diniconazole ME and 20% propiconazole ME had better control effect. Control effectiveness reached 84.53% and 81.19% respectively. The control effects of 25% myclobutanil EC, 10% difenoconazole ME and 25% triadimefon WP were 76.44%, 73.66% and 73.63%, respectively.