First, when symptoms appear, white mycelium appears on the mushroom bed and spreads rapidly. If it is not controlled in time, it can be expanded to the entire mushroom bed. In the case of high humidity, the fruiting bodies can all be "phagicized" and only one group of white hyphae can be seen, and the later white mycelium becomes water red. Mushrooms are infected with this pathogen throughout the entire development period, and the infected fruit body turns brown until it rots.
Second, the occurrence of the characteristics of soft rot Bacteria widely exist in the soil, in the casing or mushroom body surface colonies, and in a short period of time produce spores, these spores by the air flow, splashing when the splash of water droplets and mushroom body exudate juice spread . The disease is easy to occur in case of overlying soil and low temperature. This disease often occurs in small areas in mushroom houses and is rarely widespread.
Third, prevention and control methods (a) cover soil disinfection. (2) When the disease occurs locally, the number of water sprays on the mushroom bed should be reduced, and the ventilation of the mushroom house should be strengthened to reduce the humidity. Spray 2%% to 5%% of formaldehyde solution or thiophanate-methyl 500 times solution in the affected area to prevent and cure, and sprinkle lime powder for prevention and treatment. (The manuscript is provided by Han Chaozheng, Institute of Edible Fungi, Binhai County, Jiangsu Province; 01515-4103012 13851113822)
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