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How much do you know about the comprehensive control of edible fungus bacterial brown spot?

Published: 2024-05-18 Author: mysheen
Last Updated: 2024/05/18, How much do you know about the comprehensive control of edible fungus bacterial brown spot?

How much do you know about the comprehensive control of edible fungus bacterial brown spot?

China is rich in edible fungi resources, and it is also one of the earliest countries to cultivate and utilize edible fungi. The harm of edible fungus bacterial brown spot disease is very great, so it is necessary to take comprehensive control measures.

To ensure the hygiene of the mushroom room.

The cultivation ground is far away from the chicken, duck and poultry house, and it is strictly forbidden to throw fertilizer and contaminated bacterial sticks around to ensure a clean environment. The facilities in the mushroom room should be disinfected regularly, the bed frame and supporting materials should be removed and dried in the sun, and the floor of the mushroom room should be disinfected with bleach of 150mg/L concentration. Before entering the shed, the bacteria bag was fumigated with 10~15g/ cubic meters of sulfur and steamed in the mushroom shed for 2-3 days, and the relative humidity was kept below 85%. During the period of mushroom production, the relative humidity in the mushroom room should not be too large, and ventilation should be strengthened to keep the air fresh. in addition, the greenhouse had better be covered with drip-free plastic greenhouse film.

Select high-quality culture materials.

Choose the culture material without diseases and insect pests and no mildew, the wheat bran in the culture material formula in the high temperature season should not be higher than 10%, it is best not to add corn flour, and add the right amount of lime. The water content of the culture material is not more than 65%, the air relative humidity of the mushroom room during the strain culture period is not higher than 70%, and the soil covering material should be disinfected with formaldehyde.

Choose a good breed.

Select excellent varieties with strong impurity resistance, grasp the cultivation season, inoculate bacteria in time, so that spring planting should not be too late and autumn planting should not be too early.

Treatment of diseased mushrooms.

Once the mushroom body is infected with bacteria, it should be removed in time, including the infected young mushroom buds. When removing diseased mushrooms, the mushroom roots should be removed, and the surface of the culture medium should be cleaned to ensure that the nutrients in the substrate are not consumed.

Chemical control.

When the condition of ① is mild, 2000 times of agricultural streptomycin can be sprayed on the lesion.

② sprayed diseased mushroom body with 150mg/kg available chlorine to reduce the incidence.

③ sprayed the material surface or fruiting body with 3000-fold "mushroom guard" liquid, once every 7-10 days, and mixed the material with 3000-fold liquid "mushroom guard" to prevent bacteria infection during the whole growing period.

④ sprayed the mushroom body with 2000 times of "mushroom disease nemesis" liquid.

Comprehensive control of edible mushroom bacterial brown spot, the first largest edible fungus is mushroom, the second largest edible mushroom is Lentinus edodes, China's Lentinus edodes ranks first in the world, followed by Japan, South Korea ranked third.

Keep the mushroom farm clean and hygienic, and remove diseased mushrooms and wastes in time; mushroom houses, bed frames, appliances, etc., should be thoroughly disinfected with 1:50 times of Venus disinfectant or 2% bleach before use, especially in mushroom sheds with serious primary diseases.

When mixing the material, the verruca should be mixed with water according to the ratio of 1 to 1000 times, and the antifouling agents with high toxicity and high residue should not be used to ensure the production effect.

The culture materials of Flammulina velutipes should be sterilized thoroughly, the culture materials of mushrooms and Pleurotus ostreatus should be fully fermented and ripened evenly, and the soil-covering materials should be fumigated with formaldehyde.

During the mushroom emergence period, the temperature of Flammulina velutipes should be controlled below 15 °, avoid the season of high temperature and high humidity, strengthen ventilation and heat dissipation at high temperature, and the temperature of Pleurotus ostreatus should not exceed 18 °. If the temperature rises suddenly, cooling measures should be taken, such as opening window, uncovering film, shading and so on, but we should pay attention to the temperature fluctuation in the mushroom room should not be too large to prevent water vapor condensation and produce water film.

Diseased mushrooms should be selected and removed in time, and immediately increase ventilation, suspend or reduce water spraying, quickly reduce the temperature, and use medicine to control the degree of the disease, such as spraying 5% limewater to the material surface. It can also be sprayed with 100,200 units of streptomycin or 300 units of oxytetracycline per milliliter, or 1000 times of bleaching powder, once every 2 days, the mushroom bed will be stopped for 1 day before and after application, and the medicine can be used again at intervals of 3-4 days. Using it for more than 3 times can effectively control the spread of the disease. When the disease is serious, you should first remove the diseased mushroom, clean the material surface or cover the soil, and then spray according to the above method.

 
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