草莓白粉病(Sphaerothca Macularis)是草莓的主要病害之一。近年来在山东省草莓产区发生普遍,危害日益加重,尤其大棚草莓受害较重。据龙口、福山等地调查,田间病叶率50％～70％,后期病果率达20％以上,有的几乎无效益。目前已成为草莓生产的一大障碍。 一、症状与特点 该病主要侵染为害草莓的枝、叶、花、果。发病后在上述部位出现一层白色粉状物,这是该 Strawberry powdery mildew (Sphaerothca Macularis) is one of the main diseases of strawberry. Strawberry producing areas in Shandong Province in recent years, widespread, increasing harm, especially in the greenhouse heavier victims of strawberries. According to Longkou, Fukuyama and other places survey, field disease leaf rate of 50% to 70%, post-disease rate of 20% or more, and some almost no benefit. Has now become a major obstacle to strawberry production. First, the symptoms and characteristics The disease is mainly infected strawberry damage branches, leaves, flowers, fruit. After the onset of a white powder in the above parts, this is the