Autumn is a busy season. It is also a time when fruit trees are used as base fertilizers. In order to allow fruit trees to absorb better nutrition, we must prepare for the fruit trees in autumn. Specific advantages are as follows:
First, the growth and absorption functions of the main root systems of fruit trees are relatively active. After being absorbed by the roots, the nitrogen fertilizer applied in the fall becomes the storage nutrient of the tree and becomes the source of nutrition for flowering and leaf development the following year.
Second, the temperature difference between day and night in autumn, the proportion of scattered light increases, after fertilization is conducive to improving the photosynthetic efficiency of the leaves.
Third, if organic fertilizer is used at this time, there will be more time for the root system to absorb and operate, and store it in the tree. Fertilization in autumn is an important part of the orchard fertilization system, and it is also the basis for fertilization throughout the year.
For example, the winter jujube is a shallow-rooted fruit tree, and the growth slows down after the beginning of September, and the basal application period is earlier than that of the apple tree. It has the characteristics of late sprouting and early defoliation, and it is necessary to pay attention to improving its storage nutrient level in production. It can be seen that the use of basal fertilisers in autumn is very important.
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