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1985年3月25日,一日本旅客来中国时携带一批栗树苗(600株),经上海动植物检疫所检查发现1株有烂皮现象,切取少量粗糙、呈溃疡状的树皮以吸水纸法一星期后在立体显微镜下见菌落上有浅桔褐色抱子角,挑取少
On March 25, 1985, a Japanese traveler carried a large number of chestnut seedlings (600 plants) when they came to China. After inspection by the Shanghai Animal and Plant Quarantine Bureau, they found that there was a rotten skin. A small amount of rough, ulcerated bark was taken to absorb water A week after the paper method in the stereomicroscope, see the colonies have shallow orange brown spit angle, pick less