【摘要】 为服务镇安县油用牡丹栽植管理，采用随机抽样与固定样方调查、对比调查分析等方法，对2018年在陕西省油用牡丹基地严重发生的疫病发生情况和影响因素进行了调查研究。结果表明：油用牡丹疫病的发生与品种、株龄、密度、气候、海拔、管理水平等因素有一定关系，树龄增加、密度加大、海拔升高、管理较差和早春冻害有利于疫病的发生和危害。为减轻疫病危害应建立油用牡丹灾害性气候和生物灾害预警系统，预防早春冻害，加强田间管理特别是土壤管理，注意排涝和灌溉，合理密植，避免密度和树龄过大，及时更新老株。更多还原

【Abstract】 In 2018,oil-oriented peony blight broke out seriously in Shaanxi province.In order to effectively control the occurrence and harm to peony,the investigation was conducted by random sampling and fixed quadrat based on comparative approach.The result showed that there are relative relationship between peony blight occurrence and such factors as variety,age,density,climate,elevation and management.Age increase,density increase and elevation increase together with poor management and spring frost damage are conducive to the break-out of peony blight.Countermeasures to overcome the problems revealed were put forward,such as proper density of planting,replacement of old plants,etc.更多还原