天麻的主要病害,是由除蜜环菌外的其它真菌引起的病害和由栽培环境条件不宜而引起的生理性病害。前一种病害,一方面与蜜环菌争夺营养,另一方面造成天麻腐烂,破坏天麻与蜜环菌之间的营养平衡。后一种病害一方面因不良环境条件导致天麻生长发育的生理性障碍,产生各种异常现象,甚至死亡,另一方面还可能因为生活力减退而使一些病源真菌、细菌、病毒乘虚侵入引起病原性病害以及蜜环菌的病理侵染。 The main diseases of Gastrodia elata are diseases caused by other fungi besides Armillaria mellea and physiological diseases caused by inappropriate cultivation environment. The former disease, on the one hand, competes for nutrition with Armillaria, on the other hand, causes the decay of Tianma and destroys the nutritional balance between Gastrodia and Armillalla. On the other hand, some pathogenic fungi, bacteria and viruses may invade pathogenic fungi, bacteria and viruses due to poor living ability. On the other hand, Sexually transmitted diseases and pathogenic infection of Armillaria mellea.