平菇生长发育所需水分绝大部分来自培养料。培养料中水分的多少对菌丝体的生长发育及子实体产量的高低影响很大。保水剂是一种高分子聚合物，能吸附超过自身重量上百倍的水分，吸水后成为以其为中心的不规则球体，既不会流动，又有较好的透气性。因此，在平菇培养料中加入适量 Pleurotus ostreatus most of the water required for growth and development from the culture material. The amount of moisture in the culture material has great influence on the growth and development of mycelium and the fruiting body yield. Super absorbent polymer is a polymer that absorbs more than a hundred times its own weight of water, after absorbing water to become its center of the irregular sphere, it will not flow, but also better breathability. Therefore, mushroom cultivation medium add appropriate amount