目前,国外蘑菇栽培的覆土材料普遍采用泥炭土,单产虽然较高,但成本也高,且泥炭资源不足。因此,许多国家已开始研究用松树皮、甘蔗渣、沼气渣、废培养料等代用品作覆土材料,并取得了一定的效果。我国蘑菇栽培沿用的覆土材料,持水力低,团粒结构差,喷水后易板结,不利于蘑 At present, peat moss is generally used for the soil-covering materials cultivated by mushrooms in foreign countries. Although the yield per head is relatively high, the cost is also high, and peat resources are not enough. Therefore, many countries have begun to study the use of pine bark, bagasse, biogas residue, waste culture materials and other substitutes for soil cover material, and achieved some results. Curing materials used in mushroom cultivation in our country, with low water power, poor aggregate structure, easy to board after water spray, is not conducive to mushroom