After picking the fruit, dig deep into the soil. The roots of walnut trees are generally deeply rooted in the soil, and whether the soil has good air permeability is directly related to the growth of the root system. Therefore, after the fruit is harvested, the orchard soil should be deeply turned, and the appropriate time should be selected for deep turning, generally from the fruit harvest to the front of the leaves to clean up the orchard debris and carry out soil deep turning, and the deep turning should be controlled at 25~40 cm.
Reasonable fertilization in combination with the actual situation. In the process of deep soil ploughing, reasonable fertilization should be carried out in combination with the actual orchard. The fertilization period should be controlled from early September to late October, that is, after the walnut is harvested, in order to ensure the growth of the tree and the fruit next year, it is necessary to supplement fertilizer in time and provide sufficient nutrients. At the same time, the fertilization can be suitable for the growth of walnut trees required organic fertilizer and biological fertilizer, improve the soil, prevent compaction, promote air permeability, and add an appropriate amount of nitrogen, phosphorus, potassium and other trace element fertilizers. When fertilizing, for 2 to 4-year-old first-fruiting trees, fertilizer should be spread under the canopy; For large trees that are more than 5 years old, they can be fertilized in the ditch in the same way, and the fertilizer and soil are mixed and filled back into the ditch, or the ditch can be opened and sprinkled and the tree trays can be turned alternately every other year.
In addition, it is necessary to cooperate with watering, generally deep turning or ditching after fertilization should be timely and fully irrigated, and in drought years, water can be irrigated again before the soil is frozen.
Pruning requires time and method. Walnut trees must be pruned at the right time, generally dormant pruning is prone to damage and weaken the tree, and even cause local branch death, therefore, the pruning time is best controlled before the fall of leaves in autumn or after budding in spring. Pruning is best between the autumn equinox and the cold dew, which is conducive to the early healing of the wound during the year. If the pruning workload is large, it can also be pruned in the winter 30 days after the leaves fall - 25 days before budding, which can reduce the adverse effects of wound flow on the tree.
Walnut tree saplings are full of nutrients, the branches grow rapidly, and the crown expands year by year. This pruning not only ensures the uniform distribution of the main branches and the symmetrical growth, but also makes the crown hierarchical, transparent and not biased, so as to ensure the balanced development of the tree and gradually cultivate it into a plump tree with large fruiting volume.
The "three steps" of walnut tree autumn management are introduced here, and I hope it will be helpful to everyone. If you want to buy high-quality and high-yield walnut trees, you can download the seed bank App, and the country's excellent walnut tree varieties are available for everyone to choose.
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