When the walnut is fertilized after application, the application of medium and trace element fertilizer can improve the nutrient level of the plant and promote the differentiation of flower buds. In the second year, the flower buds are more pollen and energetic, and can be pollinated and fertilized normally. How do you add trace elements in the walnut? Let me introduce it to you today.
How to supplement trace elements in walnuts after harvest
Many friends encountered walnuts with degeneration and shelliness, which is due to the lack of magnesium, boron, zinc, molybdenum and calcium in the plants, which caused the pollen vitality to weaken and could not be pollinated properly.
The specific method is to remove the weeds and litter falling fruits in the orchard in 5-10 days after the fruit picking, and concentrate them in the park. After application, the fertilizer is mainly based on biological bacterial fertilizer, high-quality organic fertilizer and NPK elemental fertilizer, and phosphorus and potassium fertilizer and medium-quantity element fertilizer are added.
For plants over 5 years old, or walnut trees with a result of more than 50 kg, 0.5-0.75 kg of compound bio-fertilizer per plant, 8-10 kg of manure and poultry manure, and NPK (15-15-15) 1-1.5 kg of potassium sulfate, nitrate-sulfur or pure sulfur-based compound fertilizer, 0.75-1 kg of superphosphate or calcium magnesium phosphate, 0.35-0.50 kg of potassium sulfate, 0.25-0.30 kg of calcium nitrate and magnesium sulfate, borax, sulfuric acid Zinc is 0.15-0.20 kg each.
After mixing all the fertilizers evenly, wrap the water around the canopy, dig deep circular grooves of 25-30 cm each, or dig 4-6 deep 15-20 cm and width 25 on the tree plate under the walnut canopy. Radial shallow groove of -30 cm long and 80-100 cm long. Spread the fertilizer evenly in the circular shallow groove or the radial shallow groove, and cover the soil.
If the weather is dry after fertilization of walnuts, 80-100 kg of clear water, biogas slurry or manure decomposed manure and manure should be applied to each plant, and evenly applied to the soil covered with circular shallow ditch or radial shallow ditch to complete the water. It is advisable to infiltrate into the soil to promote the dissolution and conversion of fertilizer, supply root absorption, and improve the effect of post-harvest fertilization.
In addition, at the same time as fertilization at the root of the walnut, it is necessary to carry out the top dressing and to supplement various nutrients from the foliage. After harvesting walnuts, 0.1% borax, 0.1% magnesium sulfate, 0.1% zinc sulfate, 0.1% ammonium molybdate, 0.2% urea, 0.3% potassium dihydrogen phosphate, 0.5% calcium nitrate must be sprayed every 7-10 days. 600 times amino acid compound micro-fertilizer mixture, spray 2-3 times continuously, evenly spray all the branches and leaves inside and outside the walnut tree crown to start dropping with water drops.
This article URL: How to supplement the trace elements in walnuts after harvest? Fertilization technology
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