Improve the porosity of the soil and make the soil more breathable. Ditching and fertilization of fruit trees in autumn can improve the cultivation layer of the soil, improve the microbial environment, inhibit harmful organisms, promote the formation of soil aggregate structure, increase soil porosity, and make the soil more air-permeable.
Ditching and fertilization will break the root system of fruit trees, which can promote the occurrence of new root systems of fruit trees, promote the absorption of nutrients and water by the tree, and then accumulate nutrients to ensure the tree's overwintering and vigorous growth in the coming year.
Appropriately "cut the root." Root pruning can play a role in enhancing tree vigor, especially for weak old trees, pay more attention to root pruning.
In the process of applying basal fertilizer in autumn, part of the root system was damaged by furrowing and pruning. If the root system of fruit trees is pruned in a timely and appropriate amount, not only will it not affect the entire tree body, but it can inhibit the growth of autumn shoots, and the broken roots caused by the high ground temperature can be Restore or even exceed the original root growth in a short time. Due to the formation of a large number of newly absorbed roots, the vitality of the entire root system is improved. At the same time, the root system has a storage function, and a large number of new roots can grow, which can increase the nutrient "storage" of the tree.
When pruning the root system, the above-ground leaves of the fruit tree should be intact to ensure that enough photosynthetic products are transported to the roots to provide sufficient nutrient supply for the recovery of damaged roots and the occurrence of new roots.
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