The quality of Pleurotus ostreatus is the key to affecting yield. Excellent Pleurotus ostreatus strains, thick and resistant mycelium, can be widely adapted to a variety of alternative culture materials, early mushrooming, good mushroom shape, and high yield. When selecting strains, not only varieties with fast mycelial growth, strong stress resistance, early fruiting, high yield, and strong flavor should be selected, but also the temperature, nutrition, oxygen, humidity, pH, etc. of the strain should be known. As a reference for cultivation management. In addition, different types of temperature should be used in different cultivation seasons. If the temperature type of the varieties does not match the cultivation season, the yield and quality of Pleurotus ostreatus will be seriously affected and even lead to an unacceptable harvest. Now we will introduce the characteristics of the mushroom species of Pleurotus ostreatus as follows. The characteristics of high-quality bacteria: (1) From the appearance, the mycelium in the bag is all white with cotton, dense and dense, with uniform distribution, no variegated mycelium, and the front end is neat and fan-shaped. (2) The cottonseed hull culture material that has been decomposed by the hyphae becomes yellow-brown, and the sawdust culture material turns white to pale yellow. (3) The strain has a special aroma of Pleurotus ostreatus, which is elastic when the culture medium is pressed by hand; Just formed a small amount of mulberry-like buds, bacteria age 25 to 40 days, is a good strain. The characteristics of inferior bacteria species: (1) The mycelium grows slowly and weakly, unevenly, does not spread downwards, or the mycelium fills the bag, but the mycelium in the upper part of the bag is removed, leaving only the brown culture material. (2) The mycelium is yellow, and a layer of pellicles (bacterial bacilli) is produced on the surface. The growth is slow, indicating that the strain has been degraded. (3) After the hyphae overgrow the bag, sparse or bundled growth is not uniform, and a thick linear mycelial cord appears at the upper part. (4) The appearance of brown liquid in the bacterium bag is an indication of aging. Although sometimes it can produce mushrooms, the yield is very low and it is difficult to manage. Any variegated spots in the bacteria species, dark white, light yellow round or irregular shaped granules, or inhibition lines of different mycelium, are all infected with bacteria, and should be discarded immediately. GMP Certificated Immune Globulin Injection Supplier in China Hepatitis B Immunoglobulin,Hep B Immunoglobulin,Hepatitis B Immunoglobulin Vaccine,Hepatitis Immune Globulin FOSHAN PHARMA CO., LTD. , https://www.fospharma.com