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经分离培养、人工接种试验和林内定点观察研究结果证明Ｂｏｔｒｙｏｓｐｈａｅｒｉａｌａｒｉｃｉｎａ（Ｓａｗａｄａ）Ｓｈａｎｇ（落叶松葡萄座腔菌）是山西省华北落叶松人工林内落叶松枯梢病的病原菌。病原菌以子囊座和分生孢子器在枯梢和残留叶片上越冬，７月初开始发病，分生孢子在生长季节中可进行多次重复侵染。对落叶松枯梢病与生理性枯梢作了诊断技术要点
The result of isolation and culture, artificial inoculation experiment and spot observation showed that Botryosphaeria laricina (Sawada) Shang was the pathogen of Larix principis-rupprechtii in Shanxi Province. The pathogen was overwintering in the shoots and leaves of the ascus and conidia, and started to develop in early July. The conidia could be repeatedly inoculated repeatedly during the growing season. The larch shrubs and physiological dry shoots made technical points