当白腐菌在木材中生长繁殖时,它通过菌丝所分泌的酶,分解木材胞壁中的木质素,纤维素和半纤维素,同时分解木材中的色素,使木材的颜色变白,故而得名。遭受白腐的木材,往往变成筛孔状、层状、大理石状和海绵状,使木材的机械强度受到严重的损害,甚至丧失其使用价值。我们观察了木材在白腐腐朽过程中形态结构的变化并提出了防腐改性措施,这对研究木材的腐朽机理、以及扩大速生杨木的利用,具有理论意义和实用价值。我们利用扫描电镜对紫楠、杉木、楸木、檫木、白栎和杨木等多种木材在受白腐菌腐朽的不同阶段中木材组织微细结构的变化及菌丝在木材细胞中生长、蔓延的情况进行了研 When the white rot fungus grows and multiplies in the wood, it decomposes the lignin, cellulose and hemicellulose in the cell wall of the wood through the enzyme secreted by the mycelium, decomposes the pigment in the wood at the same time, makes the color of the wood white, It is named. White-tainted wood tends to become sieved, layered, marble-like and sponge-like, severely damaging the mechanical strength of wood and even losing its value for use. We observed the changes of the morphological structure of the wood during the decay of white rot and put forward the measures of preservative modification. This has theoretical significance and practical value for studying the rotting mechanism of wood and expanding the use of fast-growing poplar. Using scanning electron microscopy, we studied the changes of the microstructure and the growth and spread of mycelium in wood cells in different stages of white rot fungus, such as the wood of Chinese fir, Chinese fir, Catalpa bungei, alder, white oak and poplar The situation was studied