白粉病（Powdery mildew） 现在正是瓜果类植物生长季节，常见的白粉病也跟着出现。 白粉病高发的气温在20-30度，湿度在60-80%之间。目前的天气正适合 ...

and zucchini. While powdery mildew rarely kills plants, it can significantly reduce their health and productivity. Leaves ...

The highly-prevalent foliar diseases around at the moment are downyand powdery mildew that affect the cucumbers, squash and zucchini families. These appear on leaves and stems as a white powdery ...