How to control bacterial contamination in mushroom cultivation?
Mushroom cultivation of the main bacteria are green Trichoderma, etc., is the production of seeds and clinker production of one of the most common cultivars. This type of fungal high temperature, moist environment, such as Trichoderma held in long-term survival in the soil and organic materials or shed wall gap, through the air, earth covering materials, tools and other spread.
1, preventive measures are: the use of all diseases to eliminate the mushroom shed without a trace; bacteria and mushroom every 5 days during a spray of bactericidal drugs, the production of disease can be used without a trace and mushroom kill disease spirit alternately.
2. The mushroom shed that has been contaminated has been opened, all ventilation openings have been opened, and the import and export have been enhanced to provide ventilation; at the same time, all diseases have been sprayed without a trace, and then the contaminated bacteria bags have been treated.
3, for spot pollution: Take 100 times the killing solution to kill the king, such as the germination of the fungus spores from the base to raise the concentration to about 50 times, and deep insertion of the needle, so that liquid from the inside out The killing effect can reach 100%. Note that the needle insertion point should be located diagonally above the contamination point, inserted diagonally and injected to make the contamination point near the ground.
4, on the spot pollution: can also take the method of injection of drugs, but should increase the dose, the method above.
5, contiguous pollution: When it is difficult to inject drugs, plastic film can be cut at the intersection of pollution at the intersection, opened the plastic film, brushing liquid, which only meet the germination of bacteria on the surface of the substrate, and must be found early. Otherwise, the powder can be directly applied, and the plastic film can be returned to the place, which has a good killing effect.
6, bacteria bag about 50 percent of the area of ​​pollution: flexible treatment depending on the situation, such as edible mushroom silk has been more than half, that is, the base material has been connected by mycelium, can eliminate plastic bags, paired with 150 times The solution of the king should be washed in the fungus column, then covered with plastic film to be cultured; if the pollution is heavy and the number of edible fungi is small, the bag can be cut 3 to 5 times in the longitudinal direction, and the plastic film can be washed after the loosening. A little longer, then let it settle.
7. If there is a large area of ​​pollution, the pollution time exceeds 15 days, and the contaminating bacteria bags account for about 70 percent of the time, the batch of bacteria bags will have almost no reserve value. After the bacteria bags are completely cleared out of the shed, there are two methods of treatment. : The first is to set up a awning, after the normal killing treatment, the uncontaminated or less contaminated bacterial bags will be treated as above, and placed in the shed under the culture of bacteria, will lose the direct cultivation of valuable value; second is The pollution bags were poured, and when the weather was fine, dry lime powder was added at 2% of the weight of the dry materials. The mixture was mixed and dried, and used as a clinker cultivation or fermentation material for cultivation.
8. After cleaning the shed, thoroughly clean the sanitation, spray 2 times continuously and 2 times to get rid of all diseases, and remove the coverings such as grasshoppers, close all the ventilation holes and the import and export, and put it in a boring shed for treatment. After about 3 days of high temperature Straw shed, you can achieve a better effect of killing bacteria; then you can re-bag culture.
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