霜霉病、白粉病是危害菜豌豆的两种主要病害,对这两种病虫害,如不及时进行有效防治,易造成菜豌豆产量和品质大幅度下降。下面介绍它们的发生特点及其防治技术,供参考。豌豆霜霉病发生特点:主要为害叶片,发病初期叶面出现褪色斑,菌丛孢子层生长于叶背或叶面, Downy mildew and powdery mildew are two major diseases that endanger the vegetable pea. If these two pests and diseases are not effectively controlled in time, the yield and quality of the vegetable pea will be greatly reduced. The following describes the occurrence of their characteristics and prevention and control techniques for reference. Pea downy mildew characteristics: the main damage leaves, early onset foliar fading, bacterial spore layer growth in the leaves back or foliage,