1. The tree situation problem
If basal fertilizer is not applied in autumn, the strong trees in the orchard will turn into weak ones, and there is a big difference between the strong and the weak.
In the early stage of vegetative growth, the growth and development of roots, branches, leaves, flowers, and fruit organs require a lot of nutrients. In the latter half of the year, due to the formation of leaves, photosynthetic products increase, and nutrients will naturally continue. The nutrient source consumed by fruit trees in the early growth stage is mainly the nutrients stored by the tree body after applying basal fertilizer in autumn. After the autumn fruit is harvested, it is a critical period for the tree to accumulate nutrients. If timely and effective nutritional supplements are not available, strong trees will naturally become weak ones. Due to the lack of adequate nutrition, the normal physiological activities of budding, growth, flowering and young fruit in the early spring of the coming year cannot proceed normally.
2. Root system problems
"Cut off roots and grow new roots", only autumn can damage the roots throughout the year. The wounds on the roots caused by digging or plowing the ground in autumn are not only harmless, but also can regenerate a large number of capillary roots. If you don't apply basal fertilizer in autumn, you will miss the perfect opportunity to pruning the roots of fruit trees.
Autumn is the last growth peak period of the root system in a year, and its life activity is prosperous and its ability to absorb nutrients is strong. At this time, the fruit has been picked, the leaves are still undergoing photosynthesis, and the nutrients produced are returned to the root system and stored for root growth. If the base fertilizer cannot be applied in autumn, the root system will not be able to promote new roots, increase the number of absorbed roots, expand the absorption area of ​​nutrient elements, and increase the utilization rate of fertilizers. Moreover, the leaves will age and fall off prematurely due to lack of nutritional support. The root system will not be able to fully recuperate, and the ability of the fruit tree root system to decompose, absorb, store and transmit nutrients will be greatly weakened in the coming year.
3. Soil problems
If basal fertilizer is not applied in autumn, the beneficial microorganisms and organic matter in the soil cannot be supplemented in time and the soil cannot be improved.
The soil temperature is higher in autumn and the moisture content is better, which is conducive to the activity of microorganisms in the soil. The applied organic matter is also easily absorbed by the root system. In addition, organic fertilizer forms humus under the action of microorganisms, which increases the content of soil organic matter, changes the structure of soil aggregates, improves soil permeability and fertility and water retention capabilities, creates a good growth environment for the roots of fruit trees, and ensures the normal growth and development of fruit trees. It can promote high and stable production of fruit trees and obtain economic benefits early.
Applying a large amount of bio-organic fertilizer can improve the tree's resistance to stress. Combining with autumn fertilization and deep plowing of the soil, it can optimize the soil structure, improve the ability of the soil to resist cold, ensure the safe overwintering of the above-ground part of the fruit trees, and reduce the disease in the coming year.
4. Economic issues
As the saying goes, "Autumn fertilizer is gold, winter fertilizer is silver, and spring fertilizer is copper". Fruit tree base fertilizer is very important. But if you spend the same money, apply the same fertilizer, use the same amount, if the application time is different, the effect will be quite different. According to experiments, application of base fertilizer in autumn can increase yield by 14%-30% and improve fruit quality compared with base fertilizer in winter and spring.
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