Application of Biogas Fertilizer for Increasing Output of Chestnut

Chestnut growth requires nitrogen, phosphorus, potassium, calcium, iron, boron and other nutrients, and requires soil permeability, water, fertilizer and good performance. The use of biogas fertilizer chestnut can meet most of the nutrients needed for its growth. Biogas fertilizer is rich in nitrogen, phosphorus, potassium, calcium, magnesium, iron and other elements, and a large amount of organic matter, amino acids and vitamins, etc. High, easily absorbed by crops. At the same time, the application of biogas fertilizer can also significantly improve the soil, ensure the good micro-ecological environment needed for the growth of chestnut, and help to enhance its antifreeze and drought resistance and reduce pests and diseases. Practice has proved that the application of marsh fertilizer chestnut can be increased by about 20% than conventional methods, and the fruit is large, uniform weight, sweet taste, good color, storage and transportation, the difference between large and small is also very small. The specific methods for planting chestnut using biogas fertilizer are as follows: 1. Reapply post-harvest basal fertilizer. Schiff base should be selected after chestnut harvest, usually before the end of October. A fertilizing ditch with a circumference of about 70 cm wide is to be excavated in a circle with a canopy of dripping water. Each application of 70 kg of biogas fertilizer can be appropriately increased or decreased depending on the number of fruits and the size of the canopy. The borax can also be mixed with the biogas residue by constant amount. Apply. Apply fertilizer after applying fertilizer. 2, pre-emergence buds fertilizer. The fertilization time is April. In each round of tree crown drip, shallow trenches with depths of about 30 cm are to be excavated, 100 kg of biogas slurry is applied, 0.3 kg of borax is added, and the soil is quickly covered with clarified filtered biogas slurry. Spray the canopy once every 10 days or so. 3, flowering full strong fruit fertilizer. From June to July each year, due to flowering and fruit growth, the number of chestnuts needs more nutrients. At this time, shallow grooves with depths and widths of about 20 cm are excavated at the canopy drip circle, and about 50 kilograms of biogas slurry is applied. Add 0.5 kg of potassium dihydrogen phosphate, while spraying the biogas slurry on the leaves of the canopy, spraying once every 10 days. If it is applied at the flowering stage and the fruit enlargement stage, the effect will be better. 4. Precautions: (1) When using biogas slurry to spray chestnut leaf surface, biogas slurry must be used in the discharge room of the biogas digester that normally produces gas for more than three months, and it needs to be clarified and filtered for 2 to 3 days; ( 2) The foliar spray should be performed on a sunny or cloudy day with no wind, and it is best to choose the morning or evening when the humidity is relatively high, and not to spray on a rainy day or when the temperature is high at noon. (3) Spraying leaves Face should be focused on the back of the leaves; (4) determine the amount of fertilizer and operating skills combined with the growth of fruit trees: In general, the growth potential difference should be re-applied, the good will grow gently, the aging tree reapplied, the juvenile tree light, With more fruitful replanting and less fruitful light-handling, in terms of handling skills, special attention should be paid to not damaging the roots when excavating the fertilization ditch. Attention should be paid to shifting during repeated excavation.

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