灰树花又名贝叶多孔菌，俗称云蕈，日本称舞茸。是一种名贵食、药用菌。近年来作为一种高级保健食品，风行日本市场。因其突出的营养和药用价值，正引起人们的广泛关注。目前多采用瓶式或菌包式栽培。而此办法存在生产成本高、工艺烦、占用面积大、出菇率低、质量差等缺点。为? Grifola frondosa, also known as Bayesian polyporus, commonly known as mushroom, Japan said Maitake. Is a precious food, medicinal bacteria. In recent years as a high-level health food, the popular Japanese market. Because of its outstanding nutritional and medicinal value, is causing widespread concern. At present more use of bottle or bag cultivation. This method has the disadvantages of high production cost, annoying process, large occupied area, low fruiting rate and poor quality. for?