三、银耳原种和栽培种的制备(一)原种的制备和复壮1.原种的制备:银耳原种用木屑、米糠培养基进行培养,其组分为:阔叶落叶树木屑76%、米糠(或麦麸)20%、蔗糖1.5%、石膏粉1.5%、过磷酸钙1%。水适量。木屑的化学成分,对菌种质量关系甚大。银耳与木耳、香菇等木腐菌不同,以利用木质中半纤维素为主。含氮量高的木屑,菌丝生长特别旺盛,壳斗科树木如青杠、麻栎等半纤维含量高,用壳斗科木屑 Third, the preparation of white fungus and cultivated species (A) the original species preparation and rejuvenation 1. Preparation of the original species: white fungus species with sawdust, rice bran medium for culture, its components are: broadleaf deciduous tree sawdust 76% 20% rice bran (or wheat bran), 1.5% sucrose, gypsum powder 1.5%, superphosphate 1%. Water amount. The chemical composition of sawdust, the quality of strains of great relationship. Tremella and fungus, mushrooms and other wood rot fungi to take advantage of wood-based hemicellulose. High nitrogen content of woodchip, mycelium particularly strong growth, Fagaceae trees such as green bar, oak and other semi-high fiber content, with Fagaceae sawdust