1, a reasonable fertilization. After harvesting the fruit, the tree's vitality is seriously injured. Nutrition should be added in time and the fertilizer should be applied in a reasonable manner so that it can quickly restore the tree vigor and increase the accumulation of nutrients, thereby improving the cold resistance of the chestnut tree. After harvesting fruit, fertilization should be based on organic fertilizer. In general, 8 to 10 years old trees will be planted with 50 to 60 kilograms of mature manure, 0.5 kilograms of urea, 1 kilogram of phosphate fertilizer, and more than 10 years old trees. The amount of fertilizer will be increased or decreased according to the amount of results. .
2, irrigation drought. After the chestnut tree is harvested, the water loss of the tree body is very large, the weather in autumn and winter is also relatively dry, and the chestnut tree is susceptible to drought. Therefore, after the fruit is harvested, the chestnut garden should be filled with water once in a timely manner to supplement the tree water.
3, earthworms. In mid- and late November, each chestnut tree is sized with 2-4 rotten farmyard fertilizers depending on the size of the tree. The trunk is used as the center, and it is laid under the canopy and covered with fine soil. The next spring, when the temperature rises, it will be dug again, which will facilitate long-term ventilation and reduce the growth of weeds.
4, pest control and treatment. After the fruit is harvested, the garden is cleared in time, the dead branches and the pests and branches are cut off, the branches and leaves of the diseases and insect pests on the ground are cleared, and they are burned or buried. The main pests that harm the chestnut tree should be treated with pesticides in a timely manner. The medicine can be used with times of Bordeaux mixture, 40% omethoate emulsion 1500 times, or 2.5% emulsion killed EC 8,000 times.
5, reasonable pruning. In autumn, the temperature is higher. At this time, the chestnut tree is trimmed. The wound can not only heal quickly, but also avoid the sprouting of the branches near the leg. For the early-stage chestnut trees, only the dense branches and leggy branches were sparsely shorn; for the fruit trees with prosperous periods, the main features were sparse deletion, deflation and union, maintaining the tree shape, and coordinating the relationship between vegetative growth and reproductive growth; It should be noted that fruit branches are rejuvenated and updated to extend the life of the results.
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