Prevention and control of mushroom virus disease

Once the mushroom virus disease occurs, it will do great harm, not only the decline in production in that year, such as incomplete disinfection of mushroom houses, but also affect next year's harvest. The mushroom hyphae can not form fruiting bodies after infected with the virus, and in severe cases, the mycelia rot, resulting in a large mushroom-free area on the fungus bed. After the mushroom bud was infected with the virus, the fruiting body developed malformed, some had brown spots on the lid and the cap was askew; some had gaps in the cap, the cap and stalk grew unevenly, the cap was very small or long, or the stalk was bent and the lower part of the stalk was sharpened; or the stalk expanded into a stalk or jar shape in the center; some mushrooms were water-stained, and the extruded stalks were all water. The prevention and control measures are as follows:

1. Varieties should be changed frequently during cultivation. Each variety should not be used continuously for more than 2 years in the same area, and all kinds of strains should be used alternately to avoid continuous cropping to reduce the adaptability of the strain and become infected with the virus.

2. Before and after each cultivation, all mushroom sheds and tools should be disinfected with 5% formaldehyde or fumigated with bromomethane, especially the bed frame and floor of the old mushroom shed (room) should be strictly disinfected.

3. Before cultivation, in addition to disinfecting the mushroom shed (room), 10-20 tablets of Wanxiaoling are buried in the four corners (sold in the hospital). At the same time, after the cultivation materials are planted, the materials are covered with newspapers, and the newspaper is wet with 0.5% formaldehyde twice a week until the soil is covered.

4. In mushroom sheds where viral diseases have been found, mushrooms must be harvested before opening umbrellas and sterilized with 2% formaldehyde to prevent spores from spreading.