Betula platyphylla Suk is the main forest culture & management and timber tree species, however its stain degrades the wood products, which leads severe economic loss to wood industry. Therefore, the objective of this dissertation is to meet Betula platyphylla Suk’s stain principle, eliminate stain hidden trouble, and reduce economic loss efficiently. The contents mainly include: study on wood stain mechanism and selection of the antimicrobial strain to biologically control stain fungi. The main resul...