From September to October, it is the harvest season of chestnut. After the chestnut is harvested, it is necessary to supplement the nutrients and strengthen the management according to the physiological characteristics of the chestnut tree in order to increase the yield and quality of the chestnut tree in the following year. Specific management measures are as follows.
1. Fertilization. Spray leaf fertilizer or root fertilization once as soon as possible after harvest to restore the tree vigor, enhance the photosynthetic capacity of leaves, and ensure that there are sufficient nutrients for flower bud differentiation. Foliar fertilizer can use 0.3% potassium nitrate, potassium dihydrogen phosphate, urea and so on. It is required to spray sooner or later and evenly apply on the surface and back of the blade. Root fertilization, the general strain applied 500 to 750 grams of urea, 200 to 300 grams of potash. After the late autumn leaves, add organic fertilizer. The use of strip groove, ring groove, radial groove, Mushi organic fertilizer 1000 to 2000 kg.
2. Pest control. 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.
3. Watering. Liyuan with water sources should be watered in time; if relying on natural rainfall, it is necessary to trim the tree plates in time to ensure the water for growth and nutrient accumulation in later stages of chestnut trees, which will lay a good foundation for next year's production.
4. The cultivator loose soil. Timely cultivating the chestnut soil, burying the weeds shallowly in the canopy projection range, in order to facilitate loose soil and increase soil organic matter. Generally combined with base fertilizer, the depth is generally 20 to 30 cm. Note that the circumference of the crown should be deep when cultivating, and the trunk should be shallow around. When the soil is tipped, a small part of the root system is purposely damaged so that a new root can be made and the absorption of fertilizer and water can be enhanced. In addition, when the soil is turned over, it is necessary to combine the maintenance and repair of the land terraces so as to make the land water and fat.
5. Trim plastic. The number and the strength of the resulting mother tree on the chestnut tree are important signs that determine the output in the coming year. The main purpose of pruning is to promote the internal and external, upper and lower parts of the chestnut tree to be able to draw a strong mother tree, to make full use of space, to increase the result area as much as possible, and to prevent the tip of the crown from being too dense and overly high, and to ensure that the inner pagoda is well ventilated. Light. For the dense branches and male branches, they must be completely removed, a small number of branches must be cut short, and a strong new branch should be cultivated to lay the foundation for the next year. Follow the principle of pruning should not be too late should be light should not be heavy, cut pests, dead branches, overlapping branches, thin branches and drooping branches, cut branches to bring out of the orchard, and other processing or burned.
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