At present, the planting of Pleurotus ostreatus is more common in rural areas, but the yield is not high, mainly due to the low moisture content of Pleurotus ostreatus after its harvest. However, at this time, Pleurotus ostreatus mycelium has been covered with the entire culture material, and it is difficult to add moisture. How to make the culture material moist, more production of mushrooms, it will become an important factor in the high yield of Pleurotus ostreatus. There are three techniques: First, the bacteria stick wall soil moisture in the shed in the shed according to the long bottom of the bag laying a 15 to 20 cm thick soil, the bacteria will take off the fungus bags mushroom bag (call it Bacteria bag). The bacteria rods were discharged neatly on the soil. Each layer is covered with 3 to 4 cm thick soil. Both sides of the soil are sprayed with water and smeared with mud. Then discharge the second layer of bacteria rods and cover the soil to discharge 6 to 9 layers. The top layer is still covered with soil and smoothed. Do a good fire after the wall, so that the cover soil suck enough water. Afterwards, sprinkle water every day to keep the cover soil moist and routinely manage the mushrooms. This method can increase the yield of Pleurotus ostreatus by 50% to 90%. Second, the bag mouth covered nutrition soil moisturizing soil formula is: fertile soil 45 kilograms, 5 kilograms of plant ash, add water to grab a handful of soil to loosen at a height of 1 meter, the soil can spread to the floor is appropriate. Bagging cultivation management is the same as the conventional method, except that two to three centimeters thick nutritious soil is loaded at both ends of the bag. During the fruiting period, the nutrient soil was sprayed 1 to 2 times a day, and other management was routine. This method can increase production by about 50%. Third, Yangshuo earth-covered moisturizing bag Pleurotus ostreatus after the collection of mushroom, the bag drying in the sun for 1 to 2 days, so that the surface of bacteria stick a layer of skin, to prevent pest invasion and inhibition of fruiting body too much. The sterilized kitchen knife was cut open longitudinally, and the incised surface was placed on Yangshuo. The gap is filled with fine sand and then covered with 2 to 3 cm thick fine soil. Finally, an aqueous solution of superphosphate, potassium dihydrogen phosphate and white sugar was added at a ratio of 2:0.2:1:100 and was conventionally administered. This method can increase production by more than 80%. China Agricultural Network Editor