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1 continuous high temperature in the northern region of autumn mushroom production, the temperature from high to low, suitable for the growth and development of Pleurotus ostreatus fruit body, but sometimes in mid-October to early November, when the second and third tide mushroom growth, suddenly If there is a temperature above 25°C, if heat resistance measures cannot be taken in time, and the temperature is above 22°C for several days, the mushroom on the mushroom bed will die, especially if the button-sized young mushroom will be yellow and withered. death. In spring, the temperature of mushroom house exceeds 21°C for several consecutive days. If the mushroom house is poorly ventilated, the oxygen is insufficient, and the CO2 concentration is too high, the heat generated during the metabolic process cannot be distributed quickly and a large number of mushroom deaths will also occur. This is because mushroom house temperature is too high to be suitable for fruit body growth and development, but it is suitable for the growth of mycelium. Under high temperature, the fruit body that has formed will feed the mycelium, and the mushroom will die due to lack of nutrition. . In order to prevent death of mushrooms with high temperature, attention should be paid to the weather forecast. When the high temperature occurs, the mushroom bed will immediately stop spraying water, open doors and windows, strengthen ventilation, increase indoor fresh air, and increase the viability of oyster mushrooms; at the same time, take cooling measures so that they do not More than 21 °C, reduce dead mushrooms.
2 The pH value of the culture medium does not suit the suitable pH value of Pleurotus ostreatus. The suitable pH value is partial alkali. It is easy to eat mushrooms if the acidity or alkalinity is too large. If the acidity (pH below 5) buds brown, can be used to adjust the pH value of 7.5 concentration of lime water, grass ash 7.5; culture material if partial alkali (pH value of 8 or more), small buds yellow, available 0.1 % Superphosphate Adjusts pH to 7.3
Causes and Prevention of Death of Pleurotus ostreatus
In the production of Pleurotus ostreatus, due to the environmental conditions of the mushroom house and the discomfort of the cultivation materials, as well as improper management or severe weather, etc., mushroom mushroom often shrinks, turns yellow, and finally dies; sometimes, the mushroom on the bed Deaths in batches seriously affect the output and economic benefits. In this regard, the author did a lot of observation and research, summed up the causes and prevention methods of dead mushrooms, are described as follows: