Chestnut fruit fertilization essentials

Chestnut has a long fruiting period, and the result is large, and it consumes a lot of nutrients. Before and after fruit ripening, the tree is already in a state of hunger. If it is not supplemented in time, it will seriously affect the flowering results in the coming year. Therefore, it is very important to apply chestnut pre-harvest and post-harvest fertilizer.

When the chestnut fruit turns brown, the fertilizer is applied before harvesting, and the quick-acting fertilizer is the main. As a result, more than 50 kg of trees, 1.5 to 2 kg of urea per plant, 0.5 to 1 kg of potassium chloride, sprinkled after rain, or 80-100 kg of decomposed manure and manure. After 5 to 10 days after fruit picking, the fertilizer is applied, mainly NPK compound fertilizer and high quality organic fertilizer. Each plant applies 2 to 3 kg of NPK fertilizer and 25~30 of manure and poultry manure. kg. Around the canopy drip line, digging deep and wide 25 to 30 cm ring groove for fertilization.

If the weather is dry, apply water to each tree after fertilization or simmer 80-100 kilograms of decomposed human and animal manure to promote fertilizer dissolution and conversion, which can improve fertilization effect. In addition, before and after fruit picking, foliar spray fertilizer should be applied, spraying 2~3 times 0.3% urea + 0.5% potassium dihydrogen phosphate + 0.2% borax mixture, and other nutrient solution can also be used. It is best to choose a cloudy or breezy cloudy day when fertilizing, and it is better to spray it before 9:00 am or after 4:00 pm. In the event of heavy rain within 10 hours after spraying, it is necessary to re-spray and spray once every 7 to 10 days. The nutrients are supplemented from the foliage, which is beneficial to the fruit trees and the resulting mother branches for flower bud differentiation.

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