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板栗疫病病苗（ＣｒｙｐｈｏｎｅｃｔｒｉａＰａｒａｓｉｔｉｃａ）以成熟或未成熟的子囊壳和分生孢子器、子座及菌丝方式在树干、枝梢和栗实内越冬；此病菌在田间的传播形式是子囊孢子和分生孢子，远距离传播是靠苗木、接穗和栗实的调运；此病的始发期是３月中下旬，盛发期是５，６月份，抑制期是８，９月份高温季节和１２月至次年２月低温季节；新子座产生时期是从４月上旬开始，５月上中旬大量产生；分生孢子器形成的始期为４月中旬，５，６月份大量产生分生孢子器；分生孢子角产生时期从３月初至１２月上旬；越冬子囊壳，３月中下旬以后陆续产生子囊壳；新子座９月开始产生子囊壳，１０月上、中旬大量产生子囊壳，１０月上旬成熟的子囊孢子开始释放；越冬子囊孢子在田间３月下旬开始释放，直至１２月；子囊孢子室内喷射高度为２０ｃｍ；栗疫病菌生长最适温度为２５～３０℃，最低温度为５℃，最高温度为３５℃。
Cryphonectria parasitica (Cryphonectria Parasitica) is overwintering in tree trunks, shoots and chestnut in the mature or immature ascosphere and conidia, sub-locus and hyphae; the pathogen in the field is ascospore and metazoan Spores, long-distance transmission is by nursery stock, scion and chestnut real transport; the onset of the disease is in late March, Shengfa period is 5,6 months, the inhibitory period is 8, September high temperature season and December to December In February of the low temperature season; Neocastus generation period begins from early April, a large number of mid-May to produce; conidia formation of the beginning of mid-April, May and June a large number of conidia produce; meristematic Sporulation period from the beginning of March to early December; overwintering of the capsular shell, in late March successively after the production of the ascosphere; new son seat in September began to produce ascus shell, in October on the middle of a large number of ascosphere, mature in early October Of Ascospores began to release; Aspergillus spores in the field began to be released in late March until December; ascospores indoor Exit height of 20cm; Cryphonectria optimal growth temperature is 25 ~ 30 ℃, the lowest temperature of 5 ℃, maximum temperature of 35 ℃.