近几年,白粉病成为保护地草莓栽培的主要病害,发生面广,危害重,造成草莓产量下降,品质变差,使部分果农蒙受了较大的经济损失。为解决这一问题,笔者做了部分试验研究,现归纳如下: 一、主要症状和危害 草莓白粉病主要危害草莓的叶、果实、和果梗。发病初期叶背局部出现白色粉状物,以后迅速发展到全株,严重时叶片向上卷曲,花蕾不能开放,果实停止生长,着色差。近成熟的果实受害 In recent years, powdery mildew has become the main disease of strawberry cultivation in protected areas, with a wide range of occurrence and serious damage, resulting in the decline of strawberry yield and deterioration of quality, which has caused some farmers to suffer greater economic losses. To solve this problem, the author has done some experimental research, are summarized as follows: First, the main symptoms and hazards Strawberry powdery mildew is the main hazard to strawberry leaves, fruits, and fruit stems. In the early stage of disease, white powder appeared on the leaves of the back of the tree and rapidly developed to the whole plant afterwards. In severe cases, the leaves curled upward, the buds could not be opened, and the fruits stopped growing with poor color. Nearly ripe fruit is harmed