紫纹羽病,是药材的重要根类病害,寄主范围广,可危害豆科、菊科、蓼科、伞形科、桔梗科、藜科等多种植物,受害比较严重的药材如丹参、党参、桔梗、黄芪、黄连、桑等。药材受害后,产量和质量大大降低,甚至绝产。1　症状识别紫纹羽病主要危害地下部分,药材发病后,主根和须根的表面 Purple line feather disease is an important root disease of herbs, host a wide range of hazards may Leguminosae, Compositae, Polygonaceae, Umbelliferae, Campanulaceae, Chenopodiaceae and other plants, the more severely affected herbs such as Salvia, Codonopsis, Campanulaceae, Astragalus, berberine, mulberry and so on. After the victims of the medicine, the yield and quality are greatly reduced, and even absolute. 1 Symptoms Identify purple line feather disease main damage to the underground part, after the onset of herbs, the main root and fibrous surface