One, mycosis grows. In the production of Pleurotus ostreatus, hyphae are often caused by the mycelium and cause the dense mycelium to form a cluster. The reason for this is mainly the aging of the bacteria species or the transfer of aerial hyphae during transfer of the first grade strain. If the mushroom house is poorly ventilated during production and the temperature is too high, too long a film covering time can cause the hyphae to grow in length without producing mushrooms. Control methods: Strengthen seed production management, increase the ventilation of mushroom house and reduce the temperature of mushroom house during fruit body differentiation. When the old bacilli occur in the cultivation, the old bacilli will be removed in time, and the lumps and pellicles will be scratched.
Second, hyphae degenerate and shrink. The mycelium became yellow, brown, and atrophied at the stage of germination or mushrooming. This is caused by uncomfortable carbon and nitrogen ratio of culture materials, or high water content, poor ventilation, and stuffy house suffocation. Control methods: adjust the carbon and nitrogen ratio of the culture materials, reduce the moisture content of the culture materials, timely planting, and avoid high temperature hazards.
Third, the fruiting body has shrunk and died. This is mainly due to unfavorable environmental conditions during the fruiting period. For example, if the temperature of the low-temperature variety exceeds 23°C, the temperature of the medium-temperature variety exceeds 28°C, and the air humidity is less than 80%, the fruit body will shrink and die due to rapid evaporation of water; excessive water spray will cause edema of the mushroom and the mushroom will be dense. Insufficient nutrition, death of small mushrooms due to hunger and so on. Control methods: According to the cultivation season, select suitable varieties to avoid mushrooming in the high temperature season; after the appearance of mushroom buds, increase the humidity of the mushroom shed to 90%, and increase ventilation as the fruiting bodies grow up. Try to avoid spraying water directly on the mushroom body.
Fourth, malformed mushrooms. (1) Shrinking mushroom: Small cap, shrinking, long stipe, hard quality. It is caused by high temperature and low humidity. (2) Bigfoot mushroom: only long stipe, not long cap. It is caused by poor ventilation and high carbon dioxide concentration. (3) Pole mushroom. The stipe is slender and the cap is very small. The reason is that the film was too late and the light was insufficient. (4) Long cap on the cap: This phenomenon usually occurs in the winter, due to the increase of temperature in the cultivation room, the concentration of carbon dioxide accumulation is too high, the cultivation bag near the tuyere, cold wind stimulation caused by the growth of the cap out of control and from scratch. Control methods: control the temperature of the mushroom house, the best control of the mushrooming period is 15～28°C. When it encounters high temperature, it is necessary to cool the water through the spraying and ventilation. The mushrooming stage gives about 200 lux of scattered light and maintains the air humidity at 90°C. About the right amount of ventilation, control the carbon dioxide concentration below 0.1%.
Second, hyphae degenerate and shrink. The mycelium became yellow, brown, and atrophied at the stage of germination or mushrooming. This is caused by uncomfortable carbon and nitrogen ratio of culture materials, or high water content, poor ventilation, and stuffy house suffocation. Control methods: adjust the carbon and nitrogen ratio of the culture materials, reduce the moisture content of the culture materials, timely planting, and avoid high temperature hazards.
Third, the fruiting body has shrunk and died. This is mainly due to unfavorable environmental conditions during the fruiting period. For example, if the temperature of the low-temperature variety exceeds 23°C, the temperature of the medium-temperature variety exceeds 28°C, and the air humidity is less than 80%, the fruit body will shrink and die due to rapid evaporation of water; excessive water spray will cause edema of the mushroom and the mushroom will be dense. Insufficient nutrition, death of small mushrooms due to hunger and so on. Control methods: According to the cultivation season, select suitable varieties to avoid mushrooming in the high temperature season; after the appearance of mushroom buds, increase the humidity of the mushroom shed to 90%, and increase ventilation as the fruiting bodies grow up. Try to avoid spraying water directly on the mushroom body.
Fourth, malformed mushrooms. (1) Shrinking mushroom: Small cap, shrinking, long stipe, hard quality. It is caused by high temperature and low humidity. (2) Bigfoot mushroom: only long stipe, not long cap. It is caused by poor ventilation and high carbon dioxide concentration. (3) Pole mushroom. The stipe is slender and the cap is very small. The reason is that the film was too late and the light was insufficient. (4) Long cap on the cap: This phenomenon usually occurs in the winter, due to the increase of temperature in the cultivation room, the concentration of carbon dioxide accumulation is too high, the cultivation bag near the tuyere, cold wind stimulation caused by the growth of the cap out of control and from scratch. Control methods: control the temperature of the mushroom house, the best control of the mushrooming period is 15～28°C. When it encounters high temperature, it is necessary to cool the water through the spraying and ventilation. The mushrooming stage gives about 200 lux of scattered light and maintains the air humidity at 90°C. About the right amount of ventilation, control the carbon dioxide concentration below 0.1%.
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