How to apply biogas fertilizer properly

Biogas manure is a kind of farmyard manure produced by fermentation of crop straw and human feces and urine under the condition of sealed gas. It consists of fermentation broth and residue, which can be used separately.

Biogas slurry

Biogas soaking. Biogas slurry not only contains nitrogen, phosphorus, potassium, copper, iron, zinc and other nutrients, but also contains ammonium, organic acids and other resistant substances. It has a significant inhibitory effect on bacteria, and uses biogas slurry to soak seed and disease resistant seedlings. The effect is significant, generally increasing production by 5% to 10%. The soaking method is as follows: the seeds are broiled and put into a well-breathed woven bag, and one end of the rope is tied to the bag mouth, and is put into the biogas slurry of the digester, and the other end is fixed at the edge of the pool. Wheat, corn and cotton seeds are generally soaked for about 12 hours. Sweet potatoes and potatoes are generally soaked for 4 hours to 6 hours. Melons and beans are soaked for 2 hours to 4 hours. After clearing the water, the seeds are sowed.

Foliar spraying. Foliar spray of biogas slurry can not only supplement nutrients, promote growth balance, enhance photosynthesis, but also inhibit the occurrence of pests and diseases. It can be applied to grain, cotton, fruit trees and vegetables, especially to fruit trees and vegetables. Good fruit protection results, significantly improve the fruit rate. The method of application is: take the biogas slurry in the biogas digester with normal gas production for more than one month, clarification, gauze filtration, 1 part of biogas slurry plus 1 part to 2 parts of water, and 40 kg of mixed solution in general. When spraying, the back of the leaves is mainly used to facilitate absorption, once every 7 days to 10 days.

Biogas residue

Biogas residue is a kind of high-quality organic fertilizer, containing about 11% of humic acid, nitrogen, phosphorus, potassium available nutrient content is also higher, its fertilizer effect is better than the system of organic fertilizer. In addition to providing nutrients for biogas residue, there are obvious effects of fertilization and soil improvement, which can be used as basal fertilizer or topdressing fertilizer. Generally, the amount of mu is 1200 kg to 1600 kg. For the top dressing of biogas residue, the soil should be deeply applied. The best effect is when applying 6 cm to 10 cm deep.

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