Cultivation techniques of rare Edible Fungi Pleurotus eryngii

Pleurotus eryngii is a precious fungus suitable for both food and medicine, with thick meat, crisp and tender texture, dense stalk tissue, milky white and rich nutrition, so it is listed as one of the most potential edible fungi in the 21st century. Due to the high pollution rate, low bioconversion rate, ups and downs in production, unstable cultivation quantity and yield, it is necessary to master its biological characteristics and take scientific technical measures in order to achieve the ideal goal. 1. Nutritious Pleurotus eryngii is a kind of edible fungus with strong ability to decompose cellulose and lignin, which is suitable for growth of many substrates, such as sawdust, cottonseed hull, corncob, bean stalk and so on. The results of cultivation experiments showed that when the sawdust content in the medium was high, the mycelium grew slowly, the growth and development cycle was long, and the yield was low, while when the cottonseed hull content was high, the mycelium grew fast. The output is high. The addition of wheat bran or corn meal plays a good role in promoting the growth and development of Pleurotus eryngii and increasing the yield of fruiting body. The addition of bean stalk powder can also increase the yield of Pleurotus eryngii. 2. Temperature the maximum suitable temperature for mycelial growth of Pleurotus eryngii is 25 ℃, the optimum temperature for primordium formation is 10 ℃-18 ℃, the optimum temperature is 13 ℃-16 ℃, and the optimum temperature for fruiting body development is 8 ℃-20 ℃, and the optimum temperature is 10 ℃-16 ℃. It is difficult to produce mushrooms when the temperature is lower than 10 ℃ or higher than 20 ℃. Therefore, it is very important to select the suitable cultivation period of Pleurotus eryngii. 3. During the mycelial growth stage of Pleurotus eryngii, the water content of the culture material should be 60% and 65%. The ratio of total dry material to water is 1. 1. 1. 1 and 1.4, and the relative humidity of the air is 60% and 70%. At the stage of the formation and development of the fruiting body, the air humidity is required to be 85% Mel 95%. 4. The requirement of air in the mycelium growth stage of Pleurotus eryngii is not strict. In the process of mycelium growth, the carbon dioxide accumulated in the bottle bag can promote the mycelium growth. However, sufficient oxygen is needed in the stage of primordium formation to promote the growth of mushroom buds. The concentration of carbon dioxide in the fruiting body growth stage should be less than 2000 mg / kg. 5. The mycelium growth stage of Pleurotus eryngii does not need light, and the mycelium growth rate is faster when cultured in the dark culture room. Scattered light is needed for the formation and development of fruiting body, and the suitable light intensity is 500 Mel 1000 lux. 6. The pH mycelium could grow at PH4- 8, and the optimum PH5.5-6.5 for PH6.5-7.5; was the best.