Prevention and Control Measures of Pleurotus ostreatus Bacteria Contamination
The main species of miscellaneous fungi are Trichoderma, Aspergillus and Mucor, etc. The reasons for their occurrence are: first, the El Niño phenomenon this year, and the climate conditions are conducive to the survival and reproduction of miscellaneous fungi. The second is that the base material is not handled properly, which provides opportunities for the infection of miscellaneous bacteria. The third is that the environment, especially the disinfection of mushroom sheds, is not in place. Fourth, many mushroom growers are still lucky: in the early stage of pollution, they have to wait and see, or use drugs indiscriminately. It is often too late to seek treatment until the pollution becomes more and more serious.
Prevention:
One is to select highly resistant strains. In recent years, virus-free strains have been characterized by high resistance and high yield. It is recommended to carry out virus-free treatment or introduce virus-free strains.
The second is to deploy base material nutrition. Practice has proved that scientific and reasonable allocation of base material nutrition is the best measure to improve mycelial resistance and achieve high yield and high quality. Nowadays, the combination of three-dimensional nutrient essence mixing and spraying of edible fungi is mostly used, and the production can generally be increased by more than 30%.
The third is strict disinfection and sterilization. In the shed, use Baibing Qu Wu Zing to disinfect 1-2 times. For anti-pollution when mixing materials, you can add fungus disease-eliminating drugs. Spray the inside of the shed every 5 days or so during the germination period. If a small piece of contamination is found, immediately use bacteria killing to brush, dust or soak the bacteria bag to prevent the spread of bacteria spores.
The fourth is to strengthen the management of mushroom production. After the fungus bags are grown, the management of the post-ripening period of the mycelia should be strengthened, and if conditions permit, it should be extended for 15 days or more to allow it to accumulate more energy. When the diameter of the cap is 2 cm to 3 cm, the three-dimensional essence (spray type) can be sprayed on the mushroom body for three consecutive times to achieve the purpose of thickening the cap, enhancing toughness and increasing yield.