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2. Cultivate mushrooms. 1 Select the biogas tank with normal gas production and more than 3 months after the large refueling. Take the biogas residue to dry and smash the coarse sieve. Fresh straw or wheat straw is cut into small pieces of 30 cm long, and the ratio of straw to biogas residue is 1:2. The straw was immersed in water and swelled on the ground, and the thickness was 17 cm. The biogas residue was evenly spread on the straw, and the thickness was 30 cm. The straw and the biogas residue are laid in order, each of which has 3 layers. Sprinkle the biogas slurry evenly on the pile until the pile is soaked, then lay the 4th, 5th, and 6th layers in sequence, and spray each layer with biogas slurry. The biogas residue, straw and biogas slurry are 2:1:1.2. After 7 days of stacking, the central temperature reached 70 ° C, and the first turn was started. The weight of biogas residue was 3% ammonium hydrogen sulfate, 2.5% calcium magnesium phosphate fertilizer, 6.3% oil dry, and 3% gypsum powder. Mix and re-stack for 5-6 days, and when the middle of the pile reaches 70 °C, the second turn is performed. The mixture was sterilized by diluting 40 times with 40% formalin. If the pile is dry, add the biogas slurry to make it moist, and then stack it for 3 to 4 days to move into the seedbed as a culture material.
2 mushroom room and mushroom bed selection. Choose a mushroom room with good ventilation or ventilation. The size of the mushroom bed is determined according to the specific conditions.
3 mushroom bed disinfection, bed loading, sowing and management. Spray the inside of the mushroom room with the fungus frame and the mushroom bed with formaldehyde diluted 40 times. The prepared culture material is spread on a mushroom bed and has a thickness of 8 to 10 cm. The hyphae were hooked out with sterile wire and sprinkled evenly on the culture material, followed by a 5 cm thick culture. Leave the mycelium as long as the surface of the culture layer is covered with fine soil for about 5 cm, and then spray water to maintain the humidity. The temperature is controlled at 20 to 25 ° C and the relative humidity is about 70%. The bacteria bed was sprayed with 0.25 kg of glucose plus 40 kg of water. Fill the mushroom bed every time you harvest the mushrooms.
3. Potted flowers. 1 Preparation of culture soil. The biogas residue that has been decomposed for more than 3 months is mixed with the weathered mountain soil. The ratio is: 1 kg of fresh biogas residue, 2 kg of mountain soil, or 1 kg of dry biogas residue and 9 kg of mountain soil.
2 change the basin. Potted plants are planted for 1 to 3 years. They need to be replaced and expanded. The general varieties can be filled with the culture soil prepared by the above method. The valuable varieties need to be added with a little mountain soil to reduce the biogas fertilizer content. Where new plants are planted, potted flowers are replaced, and new leaves are not seen.
3 topdressing. Potted flowers generally have less soil and less nutrients, and need to be supplemented manually. However, it is not the time to make up the supplement. It is the key to potted flowers, especially the balcony.
Camellia (represented by camellia) requires thinning and less topdressing, that is, the number of times is low, and the concentration is low. The biogas slurry is applied once a month from March to May, and the concentration is 1 part of biogas slurry plus 1 to 2 parts of water; seasonal flowers (rose flowers) For the representative), the biogas slurry can be used once a month, the ratio is the same as above, and it will stop until September to October.
4. Precautions. The biogas residue must be fully decomposed, and the removed biogas residue can be stored in a bucket for 20 to 30 days. Before the biogas slurry is applied as top dressing and foliar spray, it should be open for 2 to 3 hours. Planting potted flowers with biogas slurry should be calculated according to the amount of urgency and excessive fertilization. If the old leaves fall after fertilization, the concentration is high, it should be hydrolyzed or replaced in time; if the edge of the young leaves is water-stained, it is water and fertilizer poisoning, and should be immediately removed from the pot, pruning and shading.
Comprehensive utilization technology of biogas fertilizer
1. As a base fertilizer. The biogas residue single-base fertilizer is very effective. If it is combined with biogas slurry soaking and root dressing, the effect is better. The application of biogas residue per mu is 1000-2250 kg. In combination with other measures, rice can increase yield by 9.1%, corn yield by 8.3%, and sweet potato by 13%. Biogas residue application method: generally used as a base fertilizer, the application amount is 1000-2000 kg per mu, the fruit trees are applied in the foundation pit, and other crops are directly applied to the soil.
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