通过多年大量室内和田间试验与调查,研究了金丝小枣浆烂病病原菌仁果囊孢壳菌Physalospora obtuse对金丝小枣各器官和枣果的侵染、孢子萌发、越冬寄主、子实体形成规律和侵染率与降水量关系。结果表明,病原菌于6月上旬侵染枣吊、果柄,7月上旬开始侵染枣果,8月下旬为侵染高峰期,9月中旬为田间发病高峰期,前期侵染呈潜伏侵染状态。金丝小枣树皮、枣头、枣股及落果、落叶、落吊均为病原菌越冬场所,其中以落果为主。枣园周围杨树、榆树、刺槐、苹果、梨树、桃树亦为病原菌越冬寄主并传播病原菌造成危害。病原菌在越冬病枣果上可形成有性和无性繁殖体;当年病枣果形成分生孢子发生再侵染。8月中旬、下旬雨量大,是造成金丝小枣浆烂病大发生的关键因子。 Through years of extensive laboratory and field experiments and investigations, the effects of Physalospora obtuse, a pathogen of jujube disease of Ziziphus jujuba Mill. On infection of various organs and jujube jujube, the spore germination, overwintering hosts and fruit bodies Forming rules and the relationship between infection rate and precipitation. The results showed that the pathogen invaded jujube and stalk in early June and began to invade jujube in early July, the peak of infection in late August, the peak of field incidence in mid-September and the latent infection in the early stage status. Jizhu jujube bark, jujube head, jujube shares and fruit drop, leaves, hanging are pathogenic bacteria overwintering places, of which mainly fruit drop. Poplar, elm, acacia, apple, pear and peach around the jujube are also harmful to host of pathogenic bacteria and spread pathogens. Pathogenic bacteria in the overwintering jujube can form sexual and vegetative propagules; when the disease jujube formation of conidia re-infection. In mid-August, late rainfall, is caused by the jujube jujube rot disease occurred in the key factor.