【摘要】 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%。更多还原

【Abstract】 Recessive putrid empty hole formed at the rotten place in later period will be the typical symptom,because Phaeolus schweinitzii(Fr.)Patmake the middle heart-wood of main shaft of stocked Chinese fir turn into brown rotten block.The heart-wood-rot happens in varying degrees in almost mature and mature manmade forests of Chinese fir in southeastern Guizhou and central Guizhou.The woodland area of heart-wood-rot of stocked Chinese fir has come up to 370hm 2, 18.14% of the total area of Chinese fir forest,at huapo state-owned forestry farm of Liping county.And the area of serious heart-wood-rot is 160hm 2 that are 44.2% of the area of heart-wood-rot.The analytic results of fir trunk are as follows:The loss ratio on the economic volume of timber of single Chinese fir log(PE-value)is of an average of 21.24% because of the heart-wood-rot,and the highest has comp up to 34.08%.更多还原