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１９９４～１９９５年于河北、河南两省地采集枣树皮、枣枝、枣头、枣叶、枣吊经分离、培养、鉴定，结果表明引起枣缩果病的４种病原物［１］在树体的各个部位皆可以越冬；分离菌中仍以盾壳霉菌（Ｃｏｎｉｏｔｈｙｒｉｕｍｓｐ．）和细链格孢菌（Ａｌｔｅｒｎａｒｉａｔｅｎｕｉｓｔｅｎｕｉｓ）为主，不同病原在树体上的分布也不同，枣吊、枣叶上以Ａ．ｔｅｎｕｉｓ为主，其它部位以Ｃ．ｓｐ．为主。１９９５年７月用越冬３种真菌分离菌在唐县羊角村作大田接种，接种枣果表现典型的枣缩果病症状，采接种后５ｄ的病果再分离，分离菌与原接种菌一致，证明枣树皮、枣枝、枣头等是枣缩果病菌的越冬场所。
From 1994 to 1995, jujube bark, jujube, jujube, jujube and jujube were collected, cultivated and identified in Hebei and Henan provinces. The results showed that the four pathogens that cause jujube shrinkage disease All parts of the tree can wintering. The isolates are still dominated by Coniothyrium sp. And Alternarius mutans, and the distribution of different pathogens on the tree is different. With A. tenuis dominated, other parts to C. sp. Mainly. July 1995 with winter overwintering three kinds of fungi in the field of sheep in the village of Tangxian for field inoculation, jujube fruit inoculation typical jujube shrinkage disease symptoms, mining 5d after seeding and re-separation of the disease, the same strain of bacteria and the original inoculation, Prove the jujube bark, jujube, jujube head jujube fruit shrinkage of the overwintering places.