Blackhead disease, also known as bacterial brown spot, is a type of pseudomonas and belongs to the Schizosaccharomyces, Schizosaccharomycetes. The bacteria were rod-shaped and formed white colonies with Gram negative staining.
First, the occurrence of conditions
The internal cause of the disease is the non-disease-resistance of the variety. The external cause is high temperature, high humidity, or spraying of unclean water to bring the bacteria to the fruit body. For example, if there is water droplets on the surface of the cap for a long time or the humidity is too high, it is very beneficial to the disease. The occurrence of poor ventilation can aggravate the development of the disease.
Second, prevention and control measures
1. Keep mushroom farms clean and timely remove mushrooms and waste; mushroom houses, bed frames, utensils, etc. must be thoroughly disinfected with 1:50-fold Venus disinfectant or 2% bleach before use, especially for primary diseases. Heavy mushroom shed.
(2) When the spices are mixed, the mold must be mixed with water in a ratio of 1:1000, and high-toxic, high-residue antifouling agents are not used to ensure the production effect.
3. Culture materials should be thoroughly sterilized when cultivated. The culture materials should be fully fermented when the mushrooms and mushrooms are cultivated, evenly cooked, and the earth-covered materials can be fumigated with formaldehyde.
4. Flammulina velutipes mushrooming temperature control mushroom room temperature below 15 °C, avoid high temperature, high humidity season, mushroom, increase ventilation and heat dissipation at high temperatures, Pleurotus ostreatus temperature of not more than 18 °C, if the sudden increase in temperature, to Take cooling measures, such as opening the window, uncovering the film, shading, etc., but pay attention to the temperature fluctuation in the mushroom room can not be too large to prevent condensation of water vapor, resulting in water film.
5. The mushroom should be removed in time, and immediately increase ventilation, suspend or reduce water spray, quickly reduce the temperature, and use drugs to control the disease, such as spraying 5% of lime water to the material surface, can also be sprayed per milliliter 100-200 units of streptomycin solution or 300 units of oxytetracycline, or 500-1000 times of bleach solution, once every 2 days, before and after application of the mushroom bed, stop water for 1 day, and re-administer medication at intervals of 3-4 days. Continuous use of more than 3 times can effectively control the spread of disease. When the disease is severe, you should first remove the mushrooms, clean the material surface or cover the soil before spraying according to the above method. Http://
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