In the process of edible mushroom cultivation, temperature directly affects the process of each growth stage, determines the length of the production cycle and the effectiveness of cultivation, and is also one of the determinants of the quality and yield of edible mushroom products. Different species and strains of edible fungi and their different growth stages have different temperature requirements.
In cultivation, the suitable temperature for primordium differentiation is divided into different temperature types. Taking shiitake mushrooms as an example, the high temperature strain is 15-25°C, the medium temperature strain is 10-22°C, and the low temperature strain is 5-18°C.
No matter what kind of edible fungus or what kind of strain it is, it should be mastered to grow to low temperature, suitable temperature and high temperature at different growth stages, that is, the so-called "three basic points" of temperature regulation. The "three base points" temperature of common edible fungi, such as mushroom mycelium, grow to a low temperature of 6°C, a suitable temperature of 24°C, and a high temperature of 33°C.
For most edible fungi mycelium growth stage, it is better to control the temperature at 25±1℃, while the fruit body growth stage has very different requirements for different fungi. In actual cultivation, the culture stage is generally 2-3°C lower than the appropriate temperature, and the temperature of primordium differentiation is generally 5-7°C lower than the appropriate temperature for fruit body growth.
It should also be emphasized that the above temperatures all refer to the "product temperature" in the bacteria bag, which is different from the "room temperature" of the culture room and the "air temperature" in the natural climate. In terms of product temperature and room temperature, the product temperature in the initial stage (within 15 days) of the bacteria is lower than the room temperature, and the room temperature should be controlled above the appropriate temperature. In the middle stage (15-30 days), due to the vigorous growth of mycelium, the temperature of the heat emitted should be 2-3°C higher than the room temperature, and the room temperature should be controlled to be 2-3°C lower than the appropriate temperature.