The Technical Management Points of Pleurotus Ostreatus in Autumn

Pleurotus ostreatus is so-called germination period after sowing until mushrooming. What is the degree of technical management during this period is the key period for determining whether the mushroom mycelium can normally grow in the culture medium and whether it can obtain high quality and high yield of the mushroom in the future. Therefore, it is very important to strengthen the management of Pleurotus ostreatus. In the investigation, the author found that many oyster mushroom producers believe that the oyster mushroom is easy to grow, and its management is extensive. After sowing, it often overlooks the scientific management of the germination period and takes it lightly, which leads to the loss of production of the oyster mushroom, and severe failure. In order to help the majority of producers master the technical management of Pleurotus ostreatus, the key points of the technical management of the autumn mushroom Pleurotus ostreatus are summarized as follows: The management of germination period is summarized as the management of temperature, humidity and air. First, the control method and principle of temperature during germination period. Pleurotus ostreatus is divided into two methods: plastic bag cultivation and trampoline cultivation. No matter which cultivation method, the natural temperature after sowing is preferably controlled within 28°C, and the material temperature must be controlled within 30°C. The method of bag planting is to increase or decrease the number of code bags. When the natural temperature is above 25°C, the bag of bacteria is best to be stacked in ―2”3层 shapes, and each bag should be spaced 2-3cm apart to facilitate ventilation and cooling. . In the cultivation of the boring machine, a 20 cm wide ventilation groove should be left in the middle of the material bed when the material is sown. After planting, control the light, especially direct sunlight. When the temperature is high, cover the straw curtain and cool the straw curtain with cold water. When the material temperature rises continuously, the film above the ventilation trench can be increased by 20cm to speed up the circulation of air in the film and reduce the material temperature. Pleurotus ostreatus will produce a large number of metabolic activities in the process of growth and development, coupled with a variety of microorganisms also survive in the material, the metabolism is also very strong, will continue to produce respiratory heat, leading to gradual increase in material temperature, normal material temperature To room temperature 2-3 °C, if you ignore the management, there has been an abnormal situation, the material temperature will be more than 10 degrees. Therefore, the bag must be carefully checked for planting Pleurotus ostreatus. Once it is found that the temperature of the material rises, it should promptly invert the bag to adjust the heap, strengthen ventilation. Otherwise, once the material temperature exceeds the limit temperature, the mycelium will be burned and the viability will be reduced. This will cause a great deal of damage to Penicillium, Trichoderma, Mucor, Aspergillus flavus, Streptomyces sp. Lead to production failure. Second, moisture management. During the growth period of mycelia, the water is not sprayed directly on the material surface. If the culture material that is not covered with hyphae suddenly meets the raw water, it will also cause contamination of a large amount of bacteria. Followed by the humidity of the air, the air relative humidity in the cultivation room and cultivation place should be controlled at about 70% to 75%. Humidity is too high, easy to cause bacteria, pests; humidity is low, the material within the water evaporates too quickly, so that the moisture content of the culture material is reduced, will affect the growth of mycelium. Therefore, the bags should be sealed when the bags are planted, and the ventilation and ventilation should be strengthened when the humidity is too high. As long as the high temperature phenomenon does not occur during the cultivation of the boring machine, the coating of the material should not be uncovered at will, so that the closed bacterium can not be uncovered. More secure. Third, ventilation management. Pleurotus ostreatus is aerobic fungi. In the metabolic process, oxygen is continuously absorbed and carbon dioxide is released, so that the concentration of carbon dioxide in the air inside and near the surface of the culture medium gradually increases. When the proportion of carbon dioxide increases to 1% of air, there is a significant inhibitory effect on the growth and development of Pleurotus ostreatus. The mycelial growth rate was significantly reduced and blocked. Therefore, keeping fresh air in the cultivation site is an important condition for promoting normal growth. In the early stage of management, the bacteria can be ventilated due to less hyphae and ventilation during the middle and later periods. With the increase of the amount of mycelia, more ventilation is needed; ventilation during morning and evening and nighttime during high temperature weather, and ventilation before and after noon during low temperature; Day ventilation. The actual production must be flexibly controlled according to different environmental conditions, both to meet the effective demand for oxygen when the mycelium grows and develops, but also to cause drastic changes in the small environment. China Agricultural Network Editor