Autumn is the busiest season for fruit growers, not only picking apples, selling apples, but also fertilizing fruit trees.

Therefore, many fruit growers think: autumn is too busy and spring is free, so it is better to change autumn fertilization to spring fertilization. It is believed that fertilization is delayed until spring, but it is only applied late. The fertilizer is still those fertilizers, and the effect should be similar, right?

This idea of fruit growers is very wrong!

As the saying goes: "four seasons fertilizer, autumn is the most important", "fertilization in summer and spring is not as good as basic fertilizer in autumn".Applying the same fertilizer, the effect of autumn fertilization is far better than spring fertilization!

Fruit trees in 1 year after germination, branch, flowering, fruit, consume a lot of nutrients. Fertilization before and after fruit picking, that is, from September to November, plays an important role in the recovery of fruit trees, winter prevention and high quality and yield in the second year.

From both theoretical and empirical aspects, it is shown that September-November is the "golden season" for fruit tree fertilization, which is an important link in the orchard fertilization system and the basis for annual fertilization.

From September to November, the nutrients produced by the leaves of fruit trees will be stored in flower buds, branches, stems and roots from top to bottom. At this time, the storage capacity accounts for more than 85% of the annual storage capacity.

The growth of fruit trees is nutrient consumption, and when the trees stop growing, it indicates that nutrition storage has begun. The more nutrition storage, the better. The stronger the resistance, drought resistance, cold resistance and freezing resistance of branches. The more high-quality flower buds, the higher the high-quality fruit rate and the less physiological fruit drop. Autumn nutrition is mainly to supply flower buds, short branches and fruits, the following year flowering, growth and fruiting mainly rely on autumn storage.

The root system grows fastest when the new shoots stop growing. In September, the branches and tips of fruit trees have stopped growing, and they have entered the peak period of nutrient storage in the branches. Therefore, the majority of fruit growers should seize the golden autumn season before winter to apply fertilizer.Effect of fertilization in autumn1, autumn fertilization-strong trees, long flower buds!

After picking apples and before falling leaves, there are still two months for early maturing varieties, and more than one month for Red Fuji apples. We must hurry up-apply base fertilizer in autumn!

During this period of time, the temperature is suitable, the soil moisture is good, the light is sufficient, the root system of fruit trees has a strong absorption capacity, and the fruit trees can absorb nutrients to the maximum extent!

First, it can supplement the large amount of nutrients consumed by the growth of fruit trees in time and continue to promote flower bud differentiation;

Second, it can promote nutrient storage to the tree body, enhance tree vigor, light frostbite, less rot;

Third, it can also ensure that there is enough nutrition to meet the needs of fruit trees for leaf exhibition, flowering and fruit setting in the spring of the following year.

2, spring fertilization-prosperous trees, long branches!

As we all know, the nutrition consumed by apple trees in the year of leaf exhibition, flowering and fruit setting is mainly the reserve nutrition of the previous year.

Fertilization in spring, when the fruit trees take root and absorb nutrients, has missed the apple tree's leaf exhibition, flowering and fruit setting. Therefore, it cannot provide nutrition for the apple tree's leaf exhibition, flowering and fruit setting.

On the contrary, fertilization in spring and the nutrients absorbed by fruit trees are mainly used for the growth of branches in the current year. It is easy for branches to grow and tree potential imbalance, which not only affects the quality of fruits in the current year, but also affects the quantity and quality of flower buds in the coming year.

3. Apply base fertilizer in autumn. Even if fruit trees cannot absorb it immediately in autumn and winter, apply fertilizer into the soil!

Because, in the spring of the second year, the fruit tree germinates after the root, the fruit tree can absorb the nutrition when it grows out of the root, the nutrition of the fruit tree is supplemented early, the tree grows well, which is conducive to flowering and fruit setting!

Years of experience tells us: every year to adhere to the base fertilizer in autumn, the tree is stable and strong, there is no "big and small year", fruit quality is good!

First, if conditions permit, the orchard soil should be sampled and tested., to be aware of, targeted, according to the soil test results scientific fertilizer, what is missing to make up for what, so as to reduce the cost, but also improve the efficiency.

Second, we should start from solving the main contradiction, increase the application of organic fertilizer, improve soil fertilityTo solve the "fundamental" problem, the root of the tube tree is the "fundamental". This is a law that has remained unchanged for thousands of years in the management of fruit trees. Whoever violates this law will be punished or even a lesson of blood.

Third, when applying farm manure such as cattle, sheep, pigs and chickens, you must apply retted manure and never dare to apply raw manure.The agricultural proverb has: "the saying that raw manure is even rooted and bad". although the farm manure is nutritious, its content is very low. the utilization rate of cow manure is 25% in the current year, 40% in the second year and 35% in the third year. The utilization rate of sheep manure was 45% in the current year, 35% in the second year and 20% in the third year.

In general, fertilization from September to November should account for 70% ~ 80% of the annual fertilization. Therefore, fertilization should be combined with special microbial fertilizer for fruit trees in order to achieve rapid and slow combination.