木材腐朽是世界各国林业的大敌,它不同于林木的其它病害,既不是偶发性的,也不是间隙性的,而是连年持续的发展。因此,所造成的损失总是年复一年的不断加剧,而且有些木材腐朽是从活立木就开始发生。在我省的立木腐朽中,以针叶树白腐病和山杨心腐病造成的损失最大。如山杨心腐病除危害山杨外,还危害桦木、柳、槭、核桃、栎类等阔叶树,在我国东北、西南、华北、西北各林区普通发生,一般腐朽率为32.7％,最高可达46％。未作防腐处理的枕木,使用寿命有时不到一年。在贮木场存放的木材,如不进行防腐处理,将会造成重大损失。我国南方,原 Decaying wood is the enemy of forestry in various countries in the world. It is different from other diseases of trees. It is neither sporadic nor intermittent, but a continuous development over the years. As a result, losses are always increasing year after year, and some wood decay begins with living wood. Lost wood in our province decay, conifer white rot and heart Yang caused the largest loss of heart disease. As Yang heart rot in addition to Hazard Populus, but also endanger birch, willow, maple, walnut, oak and other broad-leaved trees in China’s northeast, southwest, north China, northwest forests occur generally, the general decay rate of 32.7%, the highest Up to 46%. Non-preserved sleepers sometimes last for less than a year. Wood stored in the yard will result in significant losses if it is not preserved. South China, the original