The variety is not right, the temperature is not appropriate. Take the simplest oyster mushroom as an example. Many mushroom farmers lack the mastery of the variety. We know that oyster mushrooms also have high temperature and low temperature. Can hot summer low-temperature oyster mushrooms be produced? Does Ganoderma lucidum have no good insulation measures in winter? These are the most basic things that mushroom farmers must master.
The contamination of the bacteria bag is serious. The contamination of the bacteria bag is the most troublesome problem for the mushroom farmers. When they see a pile of pollution bags, they are all very sad. The price rises, the price of mushrooms falls, and the pollution increases. The main culprit of the contamination of the bacteria bag is mainly sterilization. thorough. Under suitable conditions of water and temperature, the bacteria that were not killed in the bacteria bag began to multiply, and began to spread on the bacteria bag, and then expanded into tablets. So what are the reasons for the incomplete sterilization?
The corncob-based culture material is generally large in size. When the material is mixed, the material block does not absorb water, and the material has a green heart. It is difficult to sterilize completely without pre-wetting; no matter whether it is normal pressure sterilization or autoclave Also, if the cold air is not exhausted during the sterilization process, the sterilizing pot is always occupied by a part of the cold air, resulting in poor heat circulation, which may result in incomplete sterilization; and sterilization can not guarantee time, sterilization time Insufficient, or a cease-fire in the sterilization process, will result in incomplete sterilization, excessively tightly placed in the sterilization pot, and there will be problems of incomplete sterilization.
The strain is not colonized or the mycelium grows slowly. There are many reasons for this phenomenon, and it is not excluded that the weak vigor of some strains may cause slow growth of hyphae. However, most of the reasons are that the bag is too tight or the water content is too high (more than 65%), and the growth rate of the hyphae is inhibited because there is not enough oxygen in the bag. Of course, the temperature of the bacteria is too low, and the poor ventilation or the pH of the culture material is not suitable, and the bacteria will be slow. After the bag is sterilized, the bag is not chilled enough to be vaccinated, resulting in a lot of colonization. In addition, the culture chamber is too dry, and the bacteria on the surface are not likely to be settled.
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