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The high-grade food in edible fungi of the genus Flammulina is of high nutritional and health value, and it has become an essential raw material in hotpots in our region and is well received by consumers. In order to further improve the yield and quality of Flammulina velutipes, according to many years of personal practice, summarized the technical points of high-yield cultivation of Flammulina velutipes, for the reference of bacterium. First, the production of strains 1. Species selection Currently, there are many varieties of Flammulina velutipes all over the country. We selected a variety of high-yield varieties suitable for local production, “Pleurotus citrinopileatus No. 1†and “Golden Needle f03†from various regions. The stress resistance is superior to other varieties, and the biological efficiency reaches 100%, which is 10% to 15% higher than the average variety. It has been widely used and promoted. 2, the original seed medium wood chips 78%, wheat bran 20%, sugar 1%, gypsum 1%, water content 60%. 3. Cultivation medium (1) Wood chips 84%, wheat bran 15%, gypsum 1%, water content 60%. (2) Sawdust 50%, corn cob 34%, wheat bran 15%, gypsum 1%, water content 60%. Each bag (17 cm 33 cm high density polyethylene) is loaded with 0.9 kg. 4. Sterilization bottles are equipped with two kinds of seed and three kinds of seeds, which are kept under pressure of 1.5 pounds for 2 hours, and are sterilized under normal pressure at 100°C for 8 hours. Cultivation bags were sterilized under normal pressure at 100°C for 12 hours. 5. The cultivation of culture strains and cultivation bags is mainly the management of temperature and light. The growth stage of the mycelium is protected from light and it is ventilated regularly. Flammulina mycelium growth temperature 8 °C -32 °C, the most suitable 20 °C -25 °C, fruiting body growth 5 °C -18 °C, the most suitable 10 °C -14 °C, more than 22 °C difficult to form fruiting bodies. Second, the cultivation method 1, the preparation of good strains require a healthy growth of mycelium, mycelium just full of aging bacteria. 2, master the best cultivation season Flammulina velutipes is a low-temperature variety, in the absence of artificial temperature control, the full use of natural temperature, a good grasp of the cultivation season is an important key to promote high yield. According to the natural temperature of our province, it is appropriate to cultivate from the first year of September to the end of the second year of February. It is best to cultivate the highest yield from October to November. 3, using high-quality raw materials and the best formula (1) cottonseed hull 80%, wheat bran 15%, superphosphate 2%, gypsum 2%, sucrose 0.7%, urea 0.3%. (2) 70% cotton seed hull, 20% wheat bran, and 10% wood chips. (3) Wood chips 75%, wheat bran 20%, superphosphate 2%, gypsum 2%. (4) Corn cob 50%, soybean meal 20%, wheat bran 20%, superphosphate 5%, gypsum 2%, urea 1%. 4. There are many cultivation methods for bagging sterilization mushroom, the use of plastic bags is better. After mixing the ingredients of various raw materials, the mixture can be bagged when the moisture content reaches 65%. Each bag is loaded with 12cm in height. It requires uniform and elastic force. It must not be too loose, flatten the surface, and keep the top. Empty 20 cm to facilitate growth of fruiting bodies in the future. In order to make the bacteria age consistent, fast mushrooming, the material in the center of the hole to the bottom of the material, and then sealed with a cotton-free cover after sterilization. Take care to handle it gently to prevent damage to the plastic bag. If damaged, use adhesive tape to make up for it. 5, sterilization and inoculation sterilization method can be used high pressure and pressure sterilization, if the production of large-scale use of atmospheric pressure sterilization, when the material temperature reaches 100 °C -110 °C can be maintained for 12 hours, waiting for the material temperature naturally drops to It can be inoculated below 20°C. If the natural temperature is high at the time of inoculation, the contamination rate of the bacteria is large. Therefore, it must be sterilized and sterilized by using the inoculation box in the inoculation room. In particular, the bacteria and tools used for inoculation should be scrubbed and disinfected with 75% alcohol. Each bottle of bacteria can be connected to 25-30 bags, cover the mouth after the completion of the bacteria culture. 6, Mycelium culture Mycelium culture of Flammulina cultivation bag is mainly temperature management. Although it can grow at 8°C to 32°C, it grows best at 20°C to 23°C. When bacteria are generated, the temperature of the bag is too high and the temperature of the bag is too high to cause heat damage. At the same time, the temperature is too low to be solved. In the process of mycelial growth, dark light culture must be used. When the light intensity is too strong, mycelial growth is inhibited. Second, the mycelium does not reach physiological maturity. The surface of the culture medium is affected by light and premature mushrooming will affect yield and quality. The dark-light culture during the silk growth stage is conducive to nutrient concentration and fruiting. 7. When the mushroom is opened for more than 20 days, when the mycelium has covered the whole bag, when the natural temperature is suitable for the growth of the mushroom body, the bag opening should be unlocked immediately, which is beneficial to the formation of fruit bodies, especially After opening the bag opening, cover the mouth of the newspaper or cloth in time. Otherwise, the surface of the culture medium will lose water, affecting the formation of mushroom buds. 8. Mushroom Management After the opening of the mushroom bag, the room should be provided with a certain amount of light and humidity, but not direct sunlight. Spray water on newspapers or cloth every day to maintain a relative humidity of 85%-95% and a space temperature of 7°C. 18 °C. After 3-5 days, small buds can appear. Do not spray water directly on the mushroom body when spraying so as to avoid causing diseases such as rot, black roots, and spots on the mushroom body. After 10-15 days of management, the stipe of the mushroom can grow out of the bag, and the stipe length can be 15-20 cm. 9, harvesting mushroom after harvest must be timely, otherwise the stipe easily discolored, rot. The standard of maturation is that the cap has begun to expand. If the edge of the cap is rolled up, it shows that it has matured enough to reduce the quality. When harvesting, collect the size of each mushroom and poke the base of the stipe with your hands. Gently rock it to remove it. Then cut the culture material on the base of the stipe and place it neatly in the basket for sale. 10, mushroom bacteria Each batch of mushroom after harvest to remove the old fungus and mushroom roots, dead mushrooms, etc., the surface of the material and then scrape a thin layer, covered with newspapers or cloth, stop spraying 3-5 days, Management according to the above method will prompt the formation of the second mushroom. Flammulina velutipes production is mainly the first batch of high yield, accounting for 50% of the total output, the second, third batch of mushrooms gradually reduced, if the late culture medium is too dry and water loss, you can spray a small amount of water in the bag, which will increase production. (Fushun City Bureau of Agriculture Lu Jia Feng Feng City Agricultural Development Bureau Shao Shaowu Fushun City Agricultural Research Institute Zhang Zhongwei)