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1987～1992年,对中国东半部11个省(市)24个县(市)的栗疫病进行了调查研究,查明此病在中国东半部普遍发生,且发病率和严重度北方栗产区普遍高于南方。经调查分析,明确了栗疫病的发生以锥栗最重,日本栗系统的丹东栗其次,板栗的抗病性最强;树龄增加,则发病率和严重度上升;此外,栗树的繁殖方式、立地条件、地理环境、林分组成和栽培管理等因素都与之有关。本文还探讨了利用栗疫菌低毒力菌株进行生物防治的可能性。
From 1987 to 1992, chestnut blight disease in 24 counties (cities) of 11 provinces (cities) in the eastern half of China was investigated and found to be common in the eastern half of China, and the incidence and severity of chestnut blight Producing areas generally higher than the South. After the investigation and analysis, it was clear that the occurrence of chestnut blight was the heaviest in chestnut chestnut, followed by Dandong chestnut in Japanese chestnut system, followed by the chestnut in disease resistance, and the incidence and severity of chestnut were increased. In addition, , Site conditions, geographical environment, stand composition and cultivation and management and other factors are related. This article also explored the possibility of using biological control of low virulent strains of Cryphonecirus.