【摘要】 天麻 (Gastrodiaelata)球茎变褐腐烂是近年发生的新病害 ,病球茎率达 42 .1 %。经病原分离鉴定 ,是由灰葡萄孢 (BotrytiscinereaPers .exFr.)所引起。通过室内毒力测定 ,多菌灵和快宁对该菌EC50 分别为 66× 1 0 - 4 mg·mL- 1 和 68× 1 0 - 4 mg·mL- 1 。讨论了病害流行的原因 ,并提出了防治方法更多还原

【Abstract】 Botrytis cinerea is a new pathogen for Gastrodia elata. It could induce bulbohium of Gastrodia elata to farm brown rot.The disease rate could reach 42.1% in the field.The effects of carbendazim and Kuaining on the pathogen were valued in the laboratory. The EC 50 of the carbendazim was 66×10 -4 mg·mL -1 and the other was 68×10 -4 mg·mL -1 .On the other hand, the reasons why the disease could break out was analysed and measures to control it were put forward.更多还原