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在安大略省栽植的所有人工林中均观察到由蜜环菌(Armillaria mellea)引起的林木死亡现象。蜜环菌是安大略省几个天然更新的地区中频于死亡的针叶幼树的主要根腐菌。享特利等(1961)发现,生长在阔叶
Forest deaths caused by Armillaria mellea were observed in all plantations planted in Ontario. Armillaria mellea is a major root rot fungus of intermediate frequency dying coniferous saplings in several naturally-occurring areas of Ontario. Xiangtuli et al (1961) found that the growth in broadleaf