玄参(Scrophularia ningpoensis Hemsl.)主产浙江。块根为常用中药,有滋阴降火、润燥生津、消肿解毒等功效。浙江省东阳、缙云、临安、余杭、富阳、杭州等地的玄参,历年遭受叶枯病的为害,常致植株叶片成批枯死,造成药用部分严重减产,影响人民用药需要。因此,掌握本病的发生规律,采取有效防 Scrophularia ningpoensis Hemsl. Main production Zhejiang. Roots are commonly used traditional Chinese medicine, nourishing yin and fire, moisturizing fluid, swelling and detoxification and other effects. Scrophulariaceae collected from Dongyang, Jinyun, Lin’an, Yuhang, Fuyang and Hangzhou in Zhejiang Province suffer from leaf blight in many years and often cause the plant leaves to die in batches, resulting in serious decrease of medicinal part and affecting people’s need for medication. Therefore, to master the law of occurrence of this disease, to take effective prevention