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因 Phaeolus schweinitzii (Fr.) Pat引起的杉立木树干基部心材中央褐色块状腐朽 ,以后期于腐朽处形成隐蔽性腐朽空洞为典型症状。该心腐在黔东南、黔中等地区近熟及成熟杉木人工林中均有不同程度发生。黎平县国营花坡林场杉立木心腐的林地面积达 370 hm2 占该林场杉木总面积的 18.14 % ,其中心腐严重的林分为 16 0 hm2 ,占心腐林地面积的 4 2 .2 4 % ;树干解析结果表明 :因心腐造成单株杉原木经济材积损失率 (PE值 )平均为 2 1.2 4 % ,最高达 34.0 8%。
Due to the Phaeolus schweinitzii (Fr.) Pat induced fir trunk base heartwood central brown block decay, later decayed at the formation of hidden decadent cavity as a typical symptom. The heart rot in Qiandongnan, Guizhou and other regions of nearly mature and mature Chinese fir plantations have varying degrees of occurrence. The forest area of Cedarwood in Lipeng County, Liping County is 370 hectares, accounting for 18.14% of the total area of the fir plantation in China. The heavily corrupted forest is 160 hm 2, accounting for 42.24% The results of tree trunk analysis showed that the economic volume loss (PE) value of Cunninghamia lanceolata was 2.12 4% on average and 34.0 8% on average.