荷兰豆又称软荚豌豆，是一种食荚豌豆。荷兰豆的主要病害有白粉病、褐斑病；主要虫害有豌豆潜叶蝇和蚜虫等。 一、白粉病 叶、茎、荚均可发病，以叶片为主。叶片正面病斑最初为淡黄色，以后逐渐扩大成不规则形的白粉病斑，背面呈褐色或紫褐色。后期多年病斑连成一片，上面散生 Dutch beans, also known as pod peas, is a food peas. The main diseases of the Netherlands bean powdery mildew, brown spot; the main pests are pea leaf miner and aphids. First, powdery mildew leaves, stems, pods can be disease-based leaves. The front of the leaf spot yellowish initially, later gradually expanded into irregular shaped spots of powdery mildew, brown or purple brown back. After many years of disease spots into a piece, above the loose health