Detailed Explanation of Key Management Techniques for Chestnut Trees Before and After Harvest
How should chestnut trees be managed before and after harvest? Please give an introduction. Chestnut trees have a long fruiting period and a large fruit load, consuming many nutrients. Around the time the fruit ripens, the tree's vigor is already in a starved or semi-starved state, very weak. If nutrients are not replenished in time, it will seriously affect the flowering and fruiting of the coming year. Therefore, applying pre-harvest fertilizer well...
How should chestnut trees be managed before and after harvest? Please give an introduction.
Chestnut trees have a long fruiting period and a large fruit load, consuming many nutrients. Around the time the fruit ripens, the tree's vigor is already in a starved or semi-starved state, very weak. If nutrients are not replenished in time, it will seriously affect the flowering and fruiting of the coming year. Therefore, applying pre-harvest and post-harvest fertilizer well is very important. It can speed up the recovery of tree vigor, promote strong tree growth, and lay a good foundation for high and stable yields the following year. The specific methods are as follows:
When the chestnut fruit turns brown, apply pre-harvest fertilizer, mainly quick-acting fertilizers. For trees bearing more than 50 kg of fruit, apply 1.5~2 kg of urea and 0.5~1 kg of potassium chloride per tree, broadcast after rain, or apply 80~100 kg of decomposed and rotted human and livestock manure water as a drench. Within 5~10 days after harvest, apply post-harvest fertilizer, mainly nitrogen-phosphorus-potassium compound fertilizer and high-quality organic fertilizer, applying 2~3 kg of nitrogen-phosphorus-potassium compound fertilizer and 25~30 kg of decomposed and rotted human, livestock and poultry manure per tree. Dig a ring trench 25~30 cm deep and 25~30 cm wide around the tree canopy drip line for fertilization. If the weather is dry, after fertilizing, drench each tree with 80~100 kg of clear water or decomposed and rotted human and livestock manure water to promote the dissolution and transformation of the fertilizer, supply the root system for absorption and utilization, and improve the fertilization effect. In addition, before and after harvest, foliar fertilizer spraying is also needed. Spray 2~3 times with a mixture of 0.3% urea + 0.5% potassium dihydrogen phosphate + 0.2% borax, or other nutrient solutions can also be used. Choose a windless or slightly windy overcast day, preferably spraying before 9 a.m. or after 4 p.m. when the stomata are open. If heavy rain occurs within 10 hours after spraying, re-spray, once every 7~10 days. Supplementing nutrients from the leaf surface helps strengthen the fruit and tree and promotes flower bud differentiation of the fruiting mother branches.
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