Treatment of deformity of Pleurotus ostreatus
In the production process of Pleurotus ostreatus, abnormal mushroom is easy to form due to inadequate management measures and inappropriate environmental conditions. In the production, we should find out the causes of abnormal mushroom formation and take effective control measures.
1. The stipe of spherical or flasks mushroom is spherical or flasks, the surface is uneven or twisted and wavy, the cap can not be formed, only a small point or obvious icicle stripes. This is caused by viral infection, the application of virus K, virus A, disinfectant spray or smear control.
2. The fruiting body primordium of broccoli mushroom is enlarged continuously, and the stalk is strongly branched, forming a hemisphere like cauliflower. This is due to the high concentration of carbon dioxide in the cultivation environment and the saturation of air humidity. Ventilation should be strengthened to reduce carbon dioxide concentration and air humidity.
3. Coral-shaped mushroom stipe is not long thick or does not form a cap, but continues to repeat the division, resulting in coral-like, white color. This is due to high carbon dioxide concentration and weak light, should strengthen ventilation, improve lighting conditions.
4. Sprout-shaped Pleurotus ostreatus stem slender, cap very small or no cap. This is due to the low temperature and long duration of cap formation. Therefore, during the formation period of the cap, if the temperature is about 0℃, try to warm up and keep warm.
5. The stipe of Pleurotus ostreatus is thick and long, edematous, and the cap is abnormal, small or without cap. This is due to the high temperature, strong light and high carbon dioxide concentration in the differentiation stage of Pleurotus ostreatus fruit body, which disturbed the metabolism of substances and caused crazy growth. Ventilation should be used to cool down and improve lighting conditions.
6. Mushroom body shriveled and withered Pleurotus ostreatus grew emaciated, fruiting body was yellow-white or light brown, mushroom body withered from top to bottom. This is due to lack of water or low air humidity in the culture medium, and it should be replenished in time.
7. After the formation of flat cut primordium of irregular shape Pleurotus ostreatus, it did not differentiate into stipe and cap, but grew into irregular fungus block, and the cap twisted and cracked at the later stage and exposed the flesh. This is due to excessive amounts of pesticides such as dichlorvos and metocide, which should be used less or not.
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What is the cause of the deformity of Pleurotus ostreatus
The occurrence of Pleurotus ostreatus deformity should have a lot to do with the great temperature difference between day and night. Since the beginning of winter, the temperature has been on the low side. In order to allow Pleurotus ostreatus to grow rapidly, many mushroom farmers deliberately raise the temperature of the greenhouse during the day. Generally speaking, after about three o'clock in the afternoon, the temperature in the shed begins to drop rapidly because of continued ventilation. As most of the currently used mushroom sheds are relatively simple and have poor heat preservation performance, at night, the temperature can drop to 4-5 ℃ or even lower, because the temperature is low and the material temperature is low. Therefore, the ability of mycelium to transport nutrients is very poor, and the temperature is higher in a short time during the day.
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Occurrence and prevention of deformity of Pleurotus ostreatus
Abnormal mushroom is a common physiological disease in the production of Pleurotus ostreatus, which seriously affects the yield and quality of Pleurotus ostreatus, and even loses its commercial value completely. This disease is mainly caused by improper management, and a few are caused by strain degradation, variation and virus infection. The main types of deformed mushrooms are: 1. The cap of Pleurotus ostreatus is small, the differentiation is poor, and the stalk is longer. The reason was that during the period of primordium formation and differentiation, the mushroom room was anoxic, the light was insufficient, and the temperature was high, which affected the normal differentiation and development of the cap. Prevention and control methods: strengthen ventilation, adjust light and temperature
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