Techniques of bag cultivation of straw mushroom

The bag cultivation of volvariella volvacea is a relatively new cultivation method, which is a high yield cultivation method of volvariella volvacea. Biological efficiency can reach 30 - 40%.

1, soaked straw cut into 2 - 3 sections, conditional can be cut into about five centimeters, soaked with 5% lime water for 6 - 8 hours. The straw soaking water can be reused twice, and lime must be added each time.

2, mixing materials will be picked up straw on the cement ground with a small slope, spread out to drain excess water, or manually wrung dry, holding the straw with one or two drops of water, that is, the appropriate moisture, water content of about 70%. Then add auxiliary materials and mix evenly, so that all kinds of auxiliary materials are evenly distributed and adhered in the straw. There are several common recipes for mixing.

Formula 1: Dry rice straw 87%+ bran 10%+ peanut cake flour or soybean flour 3%+ potassium dihydrogen phosphate 0.1%.

Formula 2: Dry rice straw 85%+ rice bran 10%+ corn flour 3%+ gypsum powder 2%+ potassium dihydrogen phosphate 0.2%.

Formula 3: Dry rice straw 83.5%+ rice bran 10%+ peanut cake powder 3%+ gypsum powder 2%+ compound fertilizer 1.5%.

Formula 4 dry straw 56.5%+ soil fertilizer 30%+ rice bran 10%+ gypsum powder 2%+ compound fertilizer 1.5%.

3, bagged by fully mixed material, choose 24×50 cm polyethylene plastic bag, one end of the bag with thick cotton thread slipknot tied, tied at 2 cm from the bag mouth. Put the mixed culture materials into bags, and compact them while loading. The wet weight of each bag is 2 - 2.5 kg. Then tie the bag tightly with cotton thread.

4, sterilization using atmospheric pressure sterilization, after the pot is installed, the temperature in the pot reaches 100℃ as soon as possible, keep 100℃ for about six hours, and then stop the fire out of the pot and move into the inoculation room.

5. Inoculation shall be carried out in sterile or inoculation box. Sterilization of sterile rooms or inoculation boxes is the same as that of other edible fungi. During inoculation, the tying rope at one end of the material bag is untied, straw mushroom strains are inserted, and the rope is tied again. Untie the tie rope at the other end, insert the same strain, and tie the rope again. A bottle (or bag) of bacteria can inoculate about twelve bags.

6. Germ management Move the inoculated bacteria bags into the incubator and discharge them on the incubator or stack them on the ground. The height of bacteria bag stacking should be determined according to the season, the stack with high temperature should have fewer layers, and the stack with low temperature can increase the number of layers appropriately. Generally stacked 3 - 4 layers is appropriate. The temperature of the culture room is best controlled at 32 - 35℃, 4 days after inoculation, when the mycelium of the bag eats 2 - 3 cm, loosen the bag tie rope, increase the oxygen in the bag, and promote the growth of mycelium. Under suitable conditions, usually 10 - 13 days hyphae can grow full bag.

7, mushroom management full of hyphae bacteria bag moved into the cultivation room, rolled up the bag mouth, discharged on the bed frame or stacked by the wall 3 - 5 layers, covered with plastic film, increase the relative humidity of the cultivation room air to about 95%. After 2 - 3 days of management, the mushroom buds begin to form, and the film can be opened at this time. When the mushroom bud grows to the size of a small button, water can be sprayed on the mushroom bag, and the mushroom bud can be harvested when it grows to the egg stage. Generally, 2 - 3 mushrooms can be harvested.