Technical Difficulty and Preventive Measures in Cultivation of Flammulina velutipes
1, bag material surface appeared white flocculent aerial hyphae Cause: 1 bacteria bag moisture content is low, moisturizing bacteria stage air temperature is insufficient. 2 After the bacteria were inoculated, the concentration of carbon dioxide in the shoots was high and ventilation was insufficient, which prolonged the time from vegetative growth to reproductive growth. Measures: 1 Adjust the moisture content of the medium. 2 Increase the relative humidity of the moisturizing and germination stage to prevent overgrowth of aerial hyphae and the formation of pellicles. Do a good job budding stage of indoor insulation and ventilation work. 2. After 3 days of “Fungi bacteriaâ€, the reason for the failure of the material fabric recovery was that the air in the environment of the Lei Lei room was too circulated, and the cover material of the bag material surface was not covered tightly. Measure: Focus on the treatment, use cold boiled water to spray 2 - 3 times for 2 consecutive days to make the material surface wet, spray water for 10 minutes and then cover it to maintain a high relative humidity between the cover and the material surface. 3, bag material surface was black and wet-like reasons: 1 directly spray raw water on the material surface. 2 The film water covers the surface of the material for a time, causing condensation on the membrane to drop back, causing mycelial shrinkage and blackening of the material surface. Measure: Use a sterile knife to dig out some of the blackening material and rehydrate the bacteria. 4. Causes of discoloration and death of mushroom buds: The small water droplets secreted during the induction of mushrooming stage failed to air-dry in time, which caused the original base of the mushroom buds to be submerged by the water droplets secreted and suffocated. Measures: When small beads of water appear on the material surface, gradually increase the indoor ventilation, so that the small water droplets in the room are air-dried. The color of the water droplets is pale yellow, clear and normal, and if it is dark brown or turbid, it is regarded as having been infected by bacteria. 5, the original base dense, effective mushroom sparse reasons: mainly due to the development of the mushroom is not synchronized, because the suppression of open umbrella, one-sided increase in carbon dioxide concentration, prematurely pull the plastic film under the bag folded up, or too early to set Bags cause most mushroom buds to suffocate due to lack of sufficient oxygen supply. Measures: According to different seasons and different cultivation environments, different ventilation measures should be adopted to solve the problem. In the suppression phase, indoor ventilation should be increased to make the mushroom buds grow taller. In spring, summer, autumn and winter, the amount of indoor air circulation should be increased in rainy days, and the relative humidity should be kept between 80% and 85%. Vertical reciprocating lifting fans should be adopted to ensure that each layer of the cultivation rack can fully flow. 6. The phenomenon of "swollen mushroom" with flat mushroom stalks and mushroom stalks is involved. Reasons: Insufficient gas exchange in mushroom house, and hyphae do not reach physiological maturity, over-drying of culture medium, aging of bacteria species, etc. will cause "swimming". "Mushroom" production. Measures: The carbon dioxide content in different developmental stages of fruiting bodies in the basement was monitored with a simple CO2 meter; the light intensity during fruit body development should be less than 200 Lx, and it should be subjected to light for 2 hours per day, several times a day. 7, the size of mushrooms buds are different reasons: bud suppression failure.