Besides being rich in nitrogen, phosphorus, and potassium, biogas fertilizers also contain trace elements that play an important role in the growth of crops, as well as a large amount of organic matter, amino acids, and Vitamins. The application of biogas fertilizer not only can significantly improve the soil, ensure the good micro-ecological environment needed for crop growth, but also help to enhance its anti-freeze and drought resistance, reduce pests and diseases, increase production and improve fruit quality.
The use of biogas residue should be combined with the growth of fruit trees to determine the amount of fertilizer. Re-applying for the growing up of the potential difference, growing up with good things, rejuvenating the old trees, and using the young and daring trees; In the end of October to early November, the digester was mixed with straw, bran cake, and soil, and was layered into a fertility drip line in a fertilizer ditch. Saplings of 4 to 8 kg per plant, each tree of the hanging fruit tree is applied to 50 kg, plus 0.5 kg of potassium dihydrogen phosphate.
The application of biogas slurry must first be diluted with water 1 to 3 times to prevent excessive damage to fruit tree roots. Propelling fertilization can be applied with 60% of biogas slurry in the first 10 days before fruit sprouting, and 2 kg per plant. After 15 days of new shoots, 6 kg of biogas slurry per plant is applied to 3 kg. Promote fruit fertilization, can be applied when the fruit diameter of 1 cm, each plant applied 80% of marsh 2 ~ 3 kg. Do not apply the biogas slurry immediately after it is removed. Park it in the air for 3 to 5 days before applying it. For foliar topdressing, it is necessary to use biogas slurry normally produced for more than 1 month and the concentration is controlled at 50% to 60% in the morning, evening or cloudy days.
To combat insect pests, during the period of high pests in March or May to July each year, select the afternoon in which the temperature is high, remove the biogas slurry immediately after filtering with gauze, spray the fruit and leaf surface with a sprayer, and add appropriate amount of laundry to the biogas slurry. Powder is better. By using this method to control aphids and red spiders of fruit trees, pests can be reduced by more than 50% within 48 hours. After the biogas slurry is taken out, it is best to apply it immediately, and the parking time should not exceed 1 hour, otherwise it will affect the pest control effect.
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