月季艳丽妖娆,深为大家喜好。往往养护不当,易遭病虫侵扰,轻则姿容减色,重则玉碎香消。白粉病是月季最常见的病害,发病植株的上部枝叶和芽、蕾上着生灰白色的菌丝,由点蔓延成片,形成一层白粉.北方在5月上旬到6月下旬,8月下旬到10月中旬,在温度高、光照少、通风不良和昼夜温差在 Rose gorgeous enchanting, deep as everyone likes. Often improperly maintained, susceptible to pests infestation, ranging from color to reduce color, weight is broken jade consumption. Powdery mildew is the most common disease of rose, the upper branches and leaves of budding plants, with gray-white mycelium buds spread from point to form a layer of white powder. North in early May to late June, late August To mid-October, at high temperatures, low light, poor ventilation and temperature difference between day and night