Measures to Prevent Deformity of Pleurotus ostreatus
In the process of Pleurotus ostreatus production, because the management measures are not in place and the environmental conditions are not suitable, deformed mushrooms are often formed. The reasons for the formation of abnormal mushrooms should be found out in production, and effective control measures should be taken.
First, spherical or flask-shaped: the stalk of Pleurotus ostreatus is spherical or flask-shaped, the surface is uneven or twisted in a wavy shape, the cap cannot be formed, and there are only very small points or obvious ice-like stripes, which is caused by virus infection. Apply virus K, virus A, carbendazim spray or smear to prevent and cure.
Second, cauliflower shape: the fruiting body primordium of Pleurotus ostreatus is increasing, and the petiolule bifurcates strongly, forming a hemispherical shape like cauliflower. This is due to the high concentration of carbon dioxide in the cultivation environment and the near saturation of air humidity. Ventilation should be strengthened to reduce carbon dioxide concentration and air humidity.
Third, coral shape: the stalks of Pleurotus ostreatus do not grow thick or do not form a cap and continue to bifurcate repeatedly, resulting in coral-like and graying colors. This is due to the high concentration of carbon dioxide and weak light. Ventilation should be strengthened and lighting conditions should be improved.
Fourth, bean sprouts vegetable shape: Pleurotus ostreatus stalks slender, cap very small or aseptic cover. This is due to the fact that the temperature of the cap is too low and lasts too long when it is formed. Therefore, in the cap formation period, if there is a low temperature of about 0 degrees, we should try to increase the temperature and keep warm.
Fifth, thick stalk: Pleurotus ostreatus stalk thick and long, showing edema, cap deformity, very small or none. This is due to the excessive growth of Pleurotus ostreatus fruit body due to high temperature, strong light and high carbon dioxide concentration during the differentiation period. Should be ventilated to cool down and improve the lighting conditions.
Sixth, the mushroom body shrinks and dries up: the growth of Pleurotus ostreatus is thin, the fruiting body is yellowish white or yellowish brown, and the mushroom body shrinks and dries up from the top down. This is due to the lack of water in culture or the low humidity in the air. The culture material should be watered in time.
7. Irregular shape: after the flat-cut primordium of Pleurotus ostreatus was formed, it did not differentiate into stalk and cap, but grew into irregular clot, and the cap was twisted and cracked in the later stage and exposed the flesh. This is due to the excessive use of dichlorvos, quick-killing and other pesticides. Pesticides should be used little or not.
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Control of soft rot of Pleurotus ostreatus
1. Fresh cottonseed hulls or corncob should be selected as raw materials for culture material treatment. Before mixing the material, you should expose it in the sun for 3 days, or use ultraviolet light to kill some of the miscellaneous bacteria in the culture material. When fermentation, the fermentation process should be strict, so as to be comprehensive, uniform and thorough. Products such as warming starter, Lixin fungus king or Cladosporium king can be added to improve the ability of resistance to miscellaneous bacteria. two。 When large bags of mushrooms are cultivated during the bacteriological period, they should be placed in a cool, ventilated and clean place. Try not to cultivate in the mushroom house (shed) to avoid breeding a large number of miscellaneous bacteria in the process of mycelium culture.
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Winter planting mushroom should prevent deformity
In winter, cultivation of Pleurotus ostreatus, poor management is easy to produce a variety of abnormal mushrooms, reduce commodity value, thereby reducing economic benefits. 1. Bigfoot mushroom: After the primordium occurs, the differentiation of the cap is inconsistent with the development speed, showing that only the mushroom stalk is long, the lower part is thick and the upper part is thin, and the mushroom umbrella is not long. The diameter of the cap is smaller than the diameter of the stalk and forms bigfoot deformity. The stalk of this mushroom is hard and the commodity value is low. Preventive measures: do a good job of ventilation and reasonable water spray. Even in the case of continuous low temperature weather, the mushroom production period should also be mastered in a day when the temperature is relatively high, and ventilation for a short time should be carried out.
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