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在陕西关中地区的雪松(Cedrusdeodara)上发生枝枯病,主要使雪松树的主干和侧枝枯死。(1)经鉴定该病是由子囊菌亚门的茶藨子葡萄座腔菌(Botryosphaeriaribis)所致,无性为半知菌亚门的聚生小穴壳菌(Dothiorellagregaria);(2)该菌适宜生长的温度为27℃,pH为6;营养状况对孢子萌发影响小;(3)化学防治能有效的控制雪松枝枯病。
Branch blight occurs on Cedrus deodara in the Guanzhong area of Shaanxi Province, mainly causing the trunk and side branches of the cedar trees to die. (1) It has been identified that the disease is caused by Botryosphaeriaribis, asepsis of Ascomycota, asexual Dothiorella gregaria, The growth temperature was 27 ℃, pH was 6; the nutritional status had little effect on spore germination; (3) Chemical control could effectively control Cedar branch blight.