Chestnuts must be re-fertilized before harvest

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When the chestnut fruits turn brown, the pre-harvest fertilizer is mainly available as quick-acting fertilizers. The result is that trees of 50 kg or more, 1.5-2 kg of urea per application, 0.5-1 kg of potassium chloride, and scattered after the rain Application, or against the water or brewing decomposed human and animal manure water 80-100 kg after spraying. The post-harvest fertilizer is applied within 5-10 days after the fruit is harvested, mainly NPK fertilizer and high-quality organic fertilizer. Each NPK fertilizer is 2-3 kg, and the cooked peanut bran 1.5-2. Kilograms, brewing 25-30 kg of decomposed human and poultry manure, circumscribe the canopy drip line, dig deep and wide each with 25-30 cm in diameter. If the weather is dry, apply fertilizer or water to each tree after fertilization. The human and animal manure water 80-100 kg, to promote the dissolution and transformation of fertilizer, supply root absorption and utilization, improve the effect of fertilization. In addition, before and after harvesting, the leaves were sprayed with 3-5 times of 0.1% magnesium sulfate, 0.3% urea, 0.5% potassium dihydrogen phosphate, and 1000 times triacontanol mixture, each 7 times. - Once in 10 days. The supplement of nutrients from the leaves will help the flower buds to grow strong and strong and the resulting mother buds to differentiate.

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