How to manage chestnut trees before and after fruit picking

How to manage chestnut trees before and after fruit picking? Please introduce that the chestnut tree has a long fruit period, a large amount of fruit and a lot of nutrients. Before and after fruit ripening, the tree is already in a state of hunger and semi-hunger, which is very weak. if it is not replenished in time, it will seriously affect the flowering and fruiting of the coming year. Therefore, it is very important to apply pre-harvest fertilizer and postharvest fertilizer of Chinese chestnut, which can accelerate the recovery of tree potential, promote strong tree potential, and lay a good foundation for high and stable yield in the second year. The specific methods are as follows: when the chestnut fruit turns brown, pre-harvest fertilizer is applied, mainly quick-acting fertilizer. As a result, trees with more than 50 kg of urea and 0.5 kg of potassium chloride are applied after rain, or 80 kg 100 kg of rotten human and animal manure are drenched. Postharvest fertilizer was applied within 5-10 days after fruit harvest, mainly N-P-K compound fertilizer and high-quality organic fertilizer. 2kg of N-P-K compound fertilizer was applied per plant and 25kg of mature human and animal manure was retted. Around the crown dripping line, dig a ring ditch of 25 cm in depth and 30 cm in width to fertilize. If the weather is dry, each tree should be drenched with clear water or retting to produce mature human and animal manure water of 80kg / 100kg after fertilization to promote the dissolution and transformation of fertilizer, supply root absorption and utilization, and improve the effect of fertilization. In addition, before and after fruit picking, foliar fertilizer should be sprayed for 2 times with 0.3% urea + 0.5% potassium dihydrogen phosphate + 0.2% borax mixture, and other nutrient solutions can also be selected. It is best to choose cloudy days without wind or breeze, and it is appropriate to spray when the stomata are open before 9: 00 a.m. or after 4: 00 p.m. Spray again in case of heavy rain within 10 hours after spraying, once every 7 to 10 days. Supplying nutrients from the leaves is beneficial to the flower bud differentiation of strong fruit trees and fruiting mother branches. Click to get more chestnut planting techniques click to get more fruit planting techniques