Whether it is the growth stage of mushroom mycelium or the fruiting stage, temperature is very important, and temperature management is a very important work in mushroom cultivation.
The optimal growth temperature of mushroom mycelium is 24-26℃, but when the temperature is higher than 20℃, although the mycelium grows faster, it is also easy to breed miscellaneous bacteria. Therefore, in actual production, the cultivation temperature of mushroom should be controlled at 15-20℃, this temperature refers to the accumulated temperature between the mushroom sticks.
In production, we need to figure out the relationship between the temperature of the culture room, the accumulation of bacteria sticks and the temperature of bacteria.
Cultivation room temperature: refers to the space temperature of the mushroom cultivation room, or the growth shed. Usually, we take multiple points to measure the geometric mean in the cultivation room, and adjust according to the average value or after comprehensive analysis.
The accumulated temperature of the mushroom sticks: refers to the temperature of the gap between the mushroom sticks, also called the heap temperature. The temperature of the bacteria sticks needs to be measured every day. The growth of mushroom sticks With the growth of mycelium, the accumulated temperature of the sticks is changing, and the number of stacks and the temperature of the culture room should be adjusted according to the changes in the accumulated temperature of the sticks.
Bacterial temperature: Bacterial temperature refers to the temperature of the hyphae inside the mushroom stick.
The relationship between the three time: bacterial temperature > bacterial stick accumulated temperature > culture room temperature, because the bacterial temperature measurement is inconvenient, usually the standard we measure and control is the bacterial stick accumulated temperature.
It needs to be emphasized here: try not to use the traditional stacking method for the cultivation of shiitake mushroom sticks. It is easy to cause the accumulated temperature of the mushroom sticks to be too high, and in severe cases, "burning mushrooms" will occur. Now large bases or factory shiitake mushroom factories have begun to use the cultivation method. The shelf is ready, the mushrooms are germinated and after-ripening is the premise of the high yield of mushrooms.
Shiitake mushroom is a typical temperature-changing and fruit-bearing edible fungus. In terms of physiological characteristics, when the shiitake mushroom mycelium reaches physiological maturity, it cannot or is difficult to form primordium under constant temperature conditions. Primordial formation occurs quickly after thermal stimulation. On the other hand, when the mushroom sticks are germinated, it is necessary to avoid the stimulation of temperature difference, otherwise it is prone to early budding.
The optimum temperature in the fruiting stage of shiitake mushrooms is 10-20°C, and the best temperature is around 13°C. If the temperature is too high, the fruiting bodies of shiitake mushrooms develop too fast, the shiitake mushrooms are easy to open the umbrella, the mushroom meat is thin, the quality of the mushrooms is poor, and the shelf life is short. , Good taste, easy to form mushrooms.
Generally, shiitake mushrooms are divided into three different temperature types according to the temperature requirements in the fruiting stage of shiitake mushrooms:
1. High temperature type: The differentiation temperature of shiitake mushroom primordia is between 15-25℃, and the growth and development temperature of shiitake mushroom is between 20-25℃.
2. Medium temperature type: The differentiation temperature of the primordium of Lentinus edodes is between 8-20 ℃, and the growth and development temperature of Lentinus edodes is between 15-20 ℃.
3. Low temperature type: The differentiation temperature of shiitake mushroom primordia is between 5-15℃, and the growth and development temperature of shiitake mushroom is between 10-15℃.