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        The growth and development of wild shiitake mushrooms is specific to autumn and winter, and high-quality shiitake mushrooms 

can only be cultivated in the forest environment of "three parts sun and seven parts shade" in the mountain field under the suitable 

environment. They can only form their unique chewiness and dark brown beautiful patterns of shiitake mushrooms in the mountain field 

with "moderate sunlight, rain and dew, and mountain breeze".

        If the intention is to simulate the ecological environment of wild shiitake mushrooms and carry out factory cultivation, it is necessary

to continuously introduce fresh air, discharge C02, and the mixed waste gas of shiitake mushroom stick metabolism, and ensure that the 

concentration of C02 is maintained below 0.08%. However, this process actually consumes electricity, especially in summer, frequent gasexchange inside and outside the warehouse causes a sharp rise in production costs. Even in summer, although the market price of freshshiitake mushrooms has risen significantly, the overall income is difficult to cover the cost.

        Shiitake mushrooms require a strong light intensity to make the surface cells of the mushroom cap produce a series of enzyme changes

 and form a dark brown color. The darker the color, the stronger the aroma it can emit during the cooking process. In the indoor cultivation 

environment, even with the help of light strips for supplementary lighting, the light intensity is difficult to exceed the threshold of 500 lux.

        When shiitake mushrooms are produced, they are produced at irregular locations and at irregular times. The labor cost of harvesting

 shiitake mushrooms is several times that of other cluster fungi (such as enoki mushrooms). The economic cost of factory-based cultivation 

of shiitake mushrooms will be several times the energy consumed by shiitake mushrooms in the appropriate season. Moreover, the development

 mechanism of shiitake mushrooms needs to be deeply analyzed, and the development process of shiitake mushrooms, the physiological changes 

at each development stage, and the accurate parameters of environmental temperature, light, water, and air need to be clarified. At present, 

it is still in the stage of empirical cultivation, and it is still far from the goal of annual factory cultivation. It still requires multidisciplinary cooperation.

        This is why only seasonal cultivation can be carried out at present.