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在河南省林县西部山区板栗林中,板栗干枯病(Endothia Parasitica)大面积发生,发病率达40％左右。病菌自伤口侵入主干或枝条后,光滑的树皮上产生变色的病斑,以后病部继续扩大,并渐渐肿大,树皮纵裂,病部以上叶片枯黄。发病多从茎基部开始,严重时环缢枝干,树上部枯死。后期烂皮上长出桔黄色瘤状物,逐渐连接成片,其上可见深桔红色点,为分生孢子器,到秋天,病部长出黑色子囊壳座,皮下有扇状菌丝体。1982～1988年间
In the chestnut forest in the western mountainous area of Lin County, Henan Province, the occurrence of chestnut dry shoot disease (Endothia Parasitica) occurs on a large area with the incidence of about 40%. Pathogen from the wound invade the trunk or branches, the smooth bark produce discoloration of the lesion, the disease continues to expand after the Department, and gradually swollen, bark longitudinal crack, the disease above the leaves yellowish. The incidence of more from the base of the stem began to ring serious when dry branches, the upper part of the tree withered. On the late rotten leather growing orange tumor, and gradually connected into pieces, which can be seen deep orange red dots, as conidia, to fall, the disease grow black shellac, subcutaneous fan-shaped mycelium. 1982 ~ 1988 years