Competitive bacteria are common diseases of edible fungi during the seeding period and the cultivation and germination period of wood saprophytic bags. There are many reasons for the occurrence of the fungi, and the causes are complex. Once the disease occurs, the bacteria species are often scrapped and cultivated. Failure, serious losses, so we must check every key link to prevent the occurrence of disease.
1 Cultivation sites or strains farms should choose sites where the air is fresh, well-ventilated, clean water source, and away from pollution sources such as livestock houses.
2 The production of good culture materials and cultivation bags should be closed.
The culture materials must be fresh, dry, and free of mildew, and the agglomerates should not be used due to moisture or decay. The cultivation materials should be exposed to light for 2-3 days before use. During the exposure process, they should be frequently turned up and down to ensure uniform exposure.
The moisture content of the culture material should be appropriate, and the general requirement is about 65%, and the moisture content should not be too large.
When adding spices, some control agents should be added to the culture medium, such as low-residue medicaments such as Kemodlin, Shierkang, rust-dry spirit and strong virus clearance. When I researched the cultivation bases across the country, I discovered that some farmers had random carbendazim sterilization on Hericium erinaceus, fungus, and white fungus. They did not know that carbendazim had a strong inhibitory effect on the mycelium of these varieties. The Pharmacy will seriously affect the growth of mycelia. Here, I strongly recommend that the peasant friends never use carbendazim, benomyl, methyl sulfide when planting Hericium, Auricularia, Tremella and other varieties. Bacillin, high residual fungicide].
The ingredients on the day must be sterilized on the same day and not allowed to stay overnight to avoid breeding of germs in the culture.
3 Thoroughly sterilize the culture materials and avoid tampon dampness during sterilization. First of all, whether autoclave or room temperature sterilization, sterilization time and pressure must be guaranteed. Secondly, the discharge of the bacteria bags in the sterilizer cannot be too full or too tight, leaving sufficient space for steam circulation. Finally, pay attention to the cold air to be discharged when autoclaving.
1 Strictly check the quality of strains, and if necessary, increase the amount of bacteria when inoculated. First of all, strain production should avoid hot, humid summer heat. Second, when buying strains, don't buy those strains of quality that are not guaranteed by the small workshop strains plant. Finally, in the old mushroom area, it is necessary to appropriately increase the inoculation amount of strains, especially the cultivation of bags, and adding more strains at both ends, which will enable the mycelium to quickly form surface dominance to reduce the contamination of bacteria.
2 The inoculation room should be kept clean and hygienic. Before every use, it should be disinfected and disinfected with a powerful aerosol mist disinfectant or Venus disinfectant. The vaccination should be skillful, agile and prevent the invasion of various bacteria. Prior to fumigation, additional sterilized tampon should be placed to replace the tampon that has become damp during sterilization.
3 pay attention to do a good job in the training room and fruiting room of environmental health, waste disposal in time to reduce the bacteria base. During the period of cultivating bacteria, ventilation should be performed every day to prevent the indoor air from having excessive relative humidity and high temperature. If necessary, lime or charcoal can be used to absorb moisture in the room. In the hot season, the culturing room must adhere to regular disinfection, and the disinfectant should be frequently used in rotation to prevent germs from developing resistance.
4 Check the bag or culture materials regularly and find that the contamination is treated in time. Contaminated strains should be destroyed immediately; drugs can be used for light pollution cultivation bags.
5 If the bacteria are serious, the contaminated materials can be sterilized and reused in the new materials. But be careful not to add too much pollutants.
6 When the raw material is cultivated, in order to inhibit the bacteria, 1-2% of quicklime can be added to increase the pH of the culture material; in order to reduce the number of bacteria, the culture material should be fully fermented, and an appropriate amount of pharmaceutical agent such as g is added to the culture material. Mildew, Shierkang and other fungicides. But pay attention to the added concentration.
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