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目的：探索白芷根腐病的发生发展规律，为病害的防治提供依据。方法：人工接种培养，定期解剖观察病菌对白芷的侵染情况及染病白芷的组织病理学变化。结果：病菌不能侵染健康的新鲜白芷，只能侵染萎蔫和有伤口的白芷；有伤口时，１６ｈ病菌即可侵入外皮层，在新鲜和萎蔫的白芷组织中，菌丝的扩展速度差异不大；病菌侵入皮层后，２ｄ开始形成微菌核，２ｄ～３ｄ开始引起皮层细胞和组织的破坏。结论：白芷收获后损伤和萎蔫不可避免，易受病菌侵染，病菌侵入后扩展迅速，很快地导致白芷腐烂，完全不能药用。故对该病的防治应主要从防止病菌的萌发与侵入方面考虑
Objective: To explore the occurrence and development of root rot of Angelica dahurica and provide the basis for the prevention and treatment of the disease. Methods: artificial inoculation culture, regular observation of bacteria infection Angelica dahurica and infection of the pathological changes. Results: The germs can not infect the fresh and healthy Angelica dahurica, but only the wilt and wound Angelica dahurica. When there is a wound, 16h germs can invade the outer layer. In the fresh and wilting Angelica dahurica, the differences of mycelial growth rate are not different Large; bacteria invaded the cortex, 2d began to form micro-sclerotia, 2d ~ 3d began to cause cortical cells and tissue damage. Conclusion: Angelica damaging and wilting are inevitable after harvest, susceptible to pathogen infection, rapid expansion after invade bacteria quickly lead to Angelica decay, can not be medicated at all. Therefore, the prevention and treatment of the disease should mainly prevent the germination of germs and invasive considerations