Whether or not the chestnut trees can be managed in autumn and winter in a timely manner will have a great influence on the output in the coming year. Reasonable fertilization given "eat". Generally, the development and maturation of chestnut need to consume 4.5-5 kg ​​of pure nitrogen and potassium, and 1.5-2 kg of phosphorus. After harvesting the fruit, the tree's vitality is greatly injured, and fertilizers should be added in time to enable it to quickly restore tree vigor, increase the accumulation of nutrients, and improve the cold resistance of the chestnut tree through winter. The fertilized material should be dominated by organic fertilizer, usually 8-10 years old, 50-60 kilograms of stubble fertilizer, 0.5 kilograms of urea, and 1 kilogram of phosphate fertilizer per tree plant. The trees grown more than 10 years ago will be increased or decreased according to the amount of the results. the amount. Irrigate with drought to give enough "drink." Chestnut trees have a wide distribution of roots and weak vertical distribution. After the fruit is harvested, the water loss of the tree is very large. In addition, the general autumn and winter drought is more serious and it is easy to make the chestnut tree suffer drought. Therefore, after the fruit is harvested, the conditional chestnut shall be filled with water once in a timely manner to supplement the water content of the tree. Thereafter, it is necessary to provide timely irrigation such as drought. Earthworms are used to give enough wear. Tree base soil can ensure the growth of tree roots and enhance its cold resistance. Each tree should be regarded as a size, with 2-4 dank farmyard manure, centered on the trunk, tiled under the canopy, and then covered with a layer of fine soil. When the temperature rises the following spring, it will be dug again to facilitate long-term ventilation, which will also reduce weeds. Insect pest treatment for "health." In the autumn, the main pests that are harmful to chestnut trees should be controlled in a timely manner. After picking fruit, it is necessary to pay attention to clearing the garden in time, cut away dead branches, and severe branches of pests and diseases, remove the leaves and branches of pests and plants falling off the ground, and burn or bury them in a concentrated manner. Reasonably trimmer surgery "beauty". Chestnut sap is still flowing in autumn, and the temperature is relatively high. At this time pruning, the wound can not only quickly heal, but also avoid the budding shooters near the wound. For the early results of the chestnut tree, only tightly cut branches and improperly positioned leggy branches are used; for trees with fruitful results, sparsely dominated, combined with deflation, maintains the tree type, and coordinates the relationship between vegetative growth and reproductive growth; Trees should be planned for retraction of branches, rejuvenation, and extension of life expectancy.
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