Biogas fertilizer is the residue after the biogas fermentation, such as biogas residue and biogas slurry, is a kind of fertilizer with rich nutrients and quick effects. Applying biogas fertilizer on citrus can increase the sweetness of citrus by 0.5 to 1 degree and increase production by 10% to 30%.
Planting young saplings of 1 to 2 years old, applying 100 kilograms of biogas slurry or 50 kilograms of biogas residues from the root ditch. The spring, summer and autumn three tip fertilizers should be reused. Each plant applies 10 kilograms of biogas residues, supplemented with appropriate amounts of phosphorus and potassium fertilizers. 3 to 5 years of test fruit and fruit trees, 3 times a year to focus on the best fertilizer. 1. Fertilizer before flowering: From late February to early March, fertilization accounts for 25% of the total amount of fertilization in the year. Each plant applies 25 kilograms of biogas residue or 50 kilograms of biogas slurry, and appropriate nitrogen, phosphorus, and potassium fertilizers are applied. 2, strong fruit-promoting fertilizer: in mid-late July, fertilization accounted for 50% of the total annual total, 50 kg per plant applied biogas residues or 100 kg of biogas slurry. When the tree potential is weak and the biogas fertilizer is insufficient, chemical fertilizer should be supplemented. 3. Post-harvest fertilizers: Early-maturing varieties are applied after fruit harvesting, mid-late-maturing varieties are applied before fruit harvesting, and the amount accounts for 25% of the total fertilization in the whole year. Each plant applies 25 kg of biogas residues or 50 kg of biogas slurry. For orange citrus trees over 6 years old, biogas fertilizer and chemical fertilizer should be applied at the same time. Focus on spring shoot fertilizer and post-harvest fertilizer. Apply 25 kg of biogas slurry or 50 kg of biogas slurry to each plant and apply chemical fertilizer appropriately.
Biogas manure oranges, biogas slurry with shallow root excavation, biogas residue with deep root ditching, that is, digging along the canopy drip line ring groove or digging from the base to the outside of 2 to 3 radiation ditch to the drip line, 30 cm wide and deep, then covered with soil.
The use of marsh-fertilizer pears, good flower bud differentiation, neatly arranged shoots, thick green leaves, uniform fruit, good glossiness, high sweetness, and enhanced vigor, can increase the ability of pears to resist ringworm disease and black heart disease, and increase yields by 10%. About 50% of fertilizer investment is saved.
Pear saplings are applied once a month to marsh fertilizer, each plant applies 10 kilograms of biogas slurry, and spring shoot fertilizer is applied with 10 kilograms of deep biogas residue per plant. Adult fruit trees are planted to produce fertilizer, mainly based on basal fertilizer. Base fertilizer accounted for 80% of the total amount of fertilization in the whole year. Generally, it is carried out during the dormancy period of pear trees in early spring. The radial grooves are excavated around the trunk, and 50 to 100 kilograms of biogas residues are applied to each plant, supplemented with 250 grams of compound fertilizer and covered with soil after application. Before flowering, 10 to 15 days before flowering, 50 kg of biogas slurry was applied to each plant, 50 g of urea was added, and roots were applied. Strong fruit fertilizer: 1st fertilization 1 month after flowering Xie, 30kg of biogas residue per plant or 50kg of biogas slurry, plus 100g of compound fertilizer, deep ditching. The second time in the 2 months after flowering, the fertilizing amount method was the same as the first. Also Yang Fei: After fruit picking, 30 kg per plant applied biogas slurry, plus 50 grams of urea, root appendage, fertilizer applied after harvest should avoid causing autumn shoots bud growth.
Fertilizers and pears should be properly supplemented with chemical fertilizers and other organic fertilizers. Adult fruit trees need about 300 kilograms of biogas fertilizer to meet the nutritional needs. The combination of root application and foliar fertilizer is better.
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