It should be a problem of mushroom management. After 20 to 25 days of cultivation, the bags of elm yellow mushrooms should be moved to the fruiting room or outdoor shade shed to grow mushrooms. Use horizontal racks or stand on the open ground. When the nodular hyphae in the bag protrude and turn gray-white, it indicates physiological maturity. At this time, use a blade to cut the film into 2 to 3 mushroom openings. Buds will appear 2 days after the opening. Do not spray water when the mushroom buds first appear. , when most of the mushroom buds turn golden, spray humidification, and the relative humidity of the space is 85%. Spray water once a day during the mushroom development period, keep the relative humidity of the space at 90%-95%, and control the temperature at 20-24°C. Spray water to cool down when the temperature is high. Golden cap mushrooms are sensitive to carbon dioxide, so pay attention to ventilation and aeration throughout the fruiting period. After 25 days of cultivation in bed plants, mycelium will cover the surface of the material. Cold water should be sprayed and the temperature difference should be widened. Buds will appear in 5-10 days. During the mushrooming period, the temperature, humidity and ventilation are controlled according to the boat cultivation method. In summer, when the temperature is high during the fruiting period, you can spray water to cool down and thicken the shade to reduce the heat energy radiated by the sun.