Control measures of straw mushroom dead mushroom

Volvariella volvacea is a kind of fungus with high temperature and constant temperature, which has strict requirements on the environment. According to the biological characteristics of volvariella volvacea and the author's experience in seed production and cultivation of volvariella volvacea for many years, the causes and countermeasures of the death of volvariella volvacea were discussed for readers' reference. First, the cause of the death of straw mushroom 1. The ventilation and moisturizing of the mushroom room are not coordinated. Volvariella volvacea is an aerobic fungus, which needs a lot of water to grow, and it is easy to die from lack of water if there is too much ventilation. Lack of ventilation can easily lead to excessive carbon dioxide and hypoxia death. two。 The temperature of the mushroom room changed suddenly. Most of the straw mushroom cultivated in the south uses foam mushroom house, which plays an important role in constant temperature and humidity. However, if the doors and windows are not closed in time when hit by a typhoon, or if they are not heated in time when they are frozen, or if they fail to be ventilated as soon as possible in case of continuous high temperature, or if too much well water is sprayed on the floor, and the temperature drops too fast, the mushrooms die in batches because of sudden changes in temperature. 3. Poor germplasm and damage of diseases and insect pests. Due to various reasons, the bacteria of the right age aged and died because they could not be cultivated in time. The vitality of mycelium is poor, the accumulation of nutrients after sowing is insufficient, and the survival rate of mushroom will be very low. At the same time, dead mushrooms can also occur when infected with miscellaneous bacteria or attacked by mites. Second, prevention and control countermeasures 1. Volvariella volvacea likes to grow in a hot and humid environment. After the culture material enters the room, its water content should be strictly controlled and the use of over-age bacteria should be put an end to. At the same time, keep the temperature of the mushroom room at about 30 ℃. If you encounter continuous high temperature and low moisture, you can sprinkle water on the floor and increase ventilation to achieve the purpose of cooling and moisturizing. two。 The amount of wheat bran (nitrogen) applied to the bed should not exceed 3% (or not) to reduce the occurrence of miscellaneous bacteria such as green mold and insect pests. 3. Be careful when harvesting straw mushrooms, lest mechanical damage to small mushrooms, or break the mycelium layer and cause dead mushrooms. As long as attention is paid to nursing in every production process, the occurrence of dead mushrooms in volvariella volvacea cultivation can be reduced.