Technology of using Biogas Fertilizer to grow Apple trees

Biogas fertilizer is not only rich in nitrogen, phosphorus and potassium, but also contains boron, copper, iron, manganese, calcium, zinc and other trace elements that play an important role in the growth of fruit trees, as well as a large number of organic matter, a variety of amino acids and vitamins. In addition, the application of biogas manure can significantly improve the soil, ensure a good micro-ecological environment for the growth of fruit trees, enhance its ability to resist freezing and drought, and reduce diseases and insect pests. In general, every 15 hectares of fruit trees cultivated with biogas manure can save about 150 yuan in investment and increase production by 12% to 28%. The specific methods of cultivating fruit trees with biogas fertilizer are introduced as follows:

First, apply budding fertilizer before flowering.

The fertilization time is from early February to late March (depending on the florescence of different fruit trees and different varieties), and the amount of fertilizer application accounts for 25% of the annual fertilizer application. Each plant should be treated with 25 kg of biogas residue or 50 kg of biogas slurry, plus 0.3 kg of borax to cover the soil quickly (if biogas fertilizer is insufficient, nitrogen, phosphorus and potash should be replenished). At the same time, the biogas slurry filtered by double-layer gauze was sprayed on the crown every 10 days or so.

2. Full application of strong fruit fertilizer at flowering stage

The flowering of fruit trees and the growth of fruit after anthesis need more nutrients every year, and the amount of fertilizer applied at this time accounts for 50% of the amount of fertilizer applied in the whole year. Each plant is treated with about 50 kg of biogas residue or 100 kg of biogas slurry, plus 0.5 kg of potassium dihydrogen phosphate (if the tree is weak and biogas fertilizer is insufficient, it needs to be made up by chemical fertilizer). At the same time, biogas slurry should be sprayed on the canopy leaves, once every 10 days, the effect is better.

Third, re-apply "returning Yang Fertilizer" after harvest

"Huanyang fertilizer" should be chosen after fruit trees are harvested, usually before the end of October, and the amount of fertilizer used accounts for 25% of the annual fertilizer application. Each plant applies 25 kg of biogas residue or 50 kg of biogas fertilizer (which can be increased or decreased appropriately according to the number of fruits and the size of the crown in the current year), and borax can be mixed with biogas dregs in a constant amount.

IV. matters needing attention

When spraying the leaves of fruit trees with biogas slurry, the biogas slurry in the discharge room of the biogas digester with normal gas production for more than 3 months must be used, and it should be clarified and filtered for 2 to 3 days. Foliar spraying should be carried out in sunny or cloudy days without wind, and it is best to choose morning or evening when there is high humidity, but not in rainy days or sunny days when the temperature is high at noon. Combined with the growth of fruit trees to determine the amount of fertilizer application and operation skills, poor growth should be re-applied, good growth should be applied lightly, aging trees should be re-applied, young and strong trees should be applied lightly, more fruits should be re-applied, and less fruit should be applied; biogas slurry can be applied either by root or by trenching, and biogas dregs should be required to apply deeply.