Detailed Explanation of Fertilization Techniques for Persimmon Orchards: Master Scientific Fertilization Methods
The main cultivation and management techniques are: 1. Implement the "Three Improvements" 1.1 Improve the orchard site: The vast majority of mature mountain persimmon orchards have terraces with no ridge in front and no ditch behind, and the terrace surface is low in front and high in back, causing severe soil and water erosion and exposed root systems. To improve the orchard site, the terrace surface of the persimmon orchard should be shaped with a ridge in front and a ditch behind, with the front ridge 10-15 cm high...
1. Fruit-harvest fertilizer: Generally applied after leaf fall and before bud break, it can be combined with winter orchard cleaning, plowing and turning the soil for a heavy application of base fertilizer, accounting for about 60% of the annual fertilization amount. It is mainly composed of organic fertilizer, supplemented with a small amount of inorganic fertilizer. Each tree can be applied with 100-200 kg of decomposed farmyard manure, 15 kg of plant ash, 10-20 kg of human urine, 4 kg of superphosphate, and 0.5 kg of urea. Dig strip-shaped trenches at the drip line along the outer edge of the canopy, with a trench depth of 25-40 cm, and cover with soil promptly after fertilization. 2. Pre-flowering fertilizer: Generally applied before spring shoot sprouting, accounting for about 20% of the annual fertilization amount, mainly nitrogen fertilizer, combined with phosphorus and potassium fertilizer, applied in trenches or holes, with a trench or hole depth of 15-20 cm, applying 0.1-1.5 kg of nitrogen fertilizer, 0.5-1 kg of potassium fertilizer, and 0.25-0.75 kg of phosphorus fertilizer per tree.
3. Fruit-stabilizing fertilizer: Applied around Minor Heat, accounting for about 20% of the annual fertilization amount, applying quick-acting nitrogen fertilizer combined with phosphorus and potassium fertilizer. Apply 0.5-1.5 kg of nitrogen fertilizer, 0.5-1 kg of potassium fertilizer, and 0.25-0.75 kg of phosphorus fertilizer per tree.
4. Foliar topdressing: During the growing season of persimmon trees, combine with pesticide spraying to apply 0.5% urea, 200-fold phosphorus fertilizer with potassium dihydrogen phosphate or photosynthetic micro-fertilizer, etc., for foliar spraying 3-4 times.