东北林区64种木材腐朽菌木材分解能力的研究

STUDY ON THE WOOD DEGRADING ABILITY OF 64 WOOD-ROTTING FUNGI IN THE NORTHEAST FORESTRY RESERVES OF CHINA

采用常规重量分析法 ,分别测定了 6 4种木材腐朽菌对红松、青杨、白桦木块的木材分解能力 ,测定了受菌侵染 46d后木材样品的重量损失百分率和木块的颜色变化。结果表明这些木腐菌的木材分解能力显著不同。采自长白山林区的厚黑层孔菌Nigrofomescastaneus(Imaz.)Teng是木材分解能力最强的褐腐菌 ,它分别引起白桦、青杨、红松木材样品的重量损失百分率为 6 4.9%、5 2 .2 %和 16 .9% ;白干酪菌 (Tyromycesalbidus)、灵芝 (Ganodermalucidum)、冬拟多孔菌 (Polyporellusbrumalis)、三色革裥菌 (Lenzitestricolor)、棱孔菌 (Favolusalveo laris)、朱红密孔菌 (Pycnoporuscinnabarinus)、彩绒革盖菌 (Coriolusversicolor)

The conventional weight analysis(CWA),i.e.,the percent weight loss of the wood specimens was used as an index to evaluate the wood degrading ability for 64 wood-rotting. fungi to degrade korean pine, Pinus koraiensis Sieb. et Zucc.,cathay poplar, Populus cathayana Rehd., Asian white birch, Betula platyphylla Suk.The percent weight loss and the color change of wood specimens were measured after 46 days of culture. The results showed that their wood degrading ability was significantly different. Nigrofomes castaneus (Imaz.)Teng. collected from the Chang Bai Mountain Forest Reserve in Northeastern China is the strongest brown-rot fungus to degrade wood in all the measured species,it caused 64.9%,52.2% and 16.9% weight loss of Asian white birth, cathay poplar and korean pine wood specimens respectively; Tyromyces albidus Donk., Ganoderma lucidum Karst., Polyporellus brumalis Fr., Lenzites tricolor Fr., Favolus alveolaris Quel., Pycnoporus cinnabarinus Karst., Coriolus versicolor Quel. were some species of white-rot fungi with high and higher wood degrading ability.