Tips for increasing the yield of biogas fertilizer
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The upper layer of biogas fertilizer contains a large amount of capacitive nutrients, and is a liquid fertilizer with a high concentration of nitrogen, which is easily absorbed and utilized by crops. It can be used for early topdressing of crops such as wheat, corn, cotton, and vegetables, especially for early topdressing of vegetables. Before fertilization, it should be stored in the sub-tank of the biogas tank for 6-7 days to reduce the reducing property; or diluted with water to prevent the loss of ammonia volatilization, yellowing of the seedlings and burning phenomenon.
The middle layer of biogas fertilizer is lake-like fertilizer with high nutrient content, rich in available nitrogen, phosphorus, organic matter and humus, and strong fertility. It is suitable for medium-term topdressing such as grain crops, cash crops, fruit trees and vegetables. It can continuously supply a variety of nutrients needed for plant growth and development, and has the functions of promoting branches, strong stems and granules. The amount of topdressing per acre is 1,500 to 2,500 kilograms, and the depth is 10 to 15 centimeters.
The lower layer of biogas fertilizer of biogas fertilizer contains nitrogen, organic matter, humic acid and mineralized available phosphorus, potassium and trace elements. It can be used as a base fertilizer for food crops, cash crops, fruit trees, vegetables, flowers, and melons. Regardless of dry fields or paddy fields, the biogas residue will be evenly spread on the surface of the soil, and will be turned into the tillage layer with the plow, and the manure will be thoroughly mixed with the soil. The dosage per acre is 0.2-0.5 kg, which can not only strengthen the stem (stalk), but also attack the grain, and can fertilize the soil and water. However, it should be noted that after removing the biogas residue from the biogas digesters, stack them for 15 days before use.