于1992 ～1995 年对李树流胶病病原菌特性及发生规律进行研究。结果显示: 李树流胶病在室内常遇和室外变温的最长存活时间分别为24 个月和20 个月; 病菌可随土表或土内的病残体越冬; 病菌既能从李树伤口侵入, 亦能从皮孔侵入; 该病在福建省永泰县的发病盛期为9 月中旬至10 月中旬, 连续阴雨、湿度高有利病害病发展。 From 1992 to 1995, the characteristics and occurrence of pathogenic bacteria of Silviculture were studied. The results showed that the longest survival time of liuyujiaojiao in both indoor and outdoor temperature was 24 months and 20 months, respectively. The pathogen could overwinter with the sick or dead body in soil surface or soil. , Also invaded from the lenticel; the disease in Yongtai County, Fujian Province, the peak incidence of mid-September to mid-October, continuous rainy, humid and favorable disease disease development.