Jujube trees grow very luxuriantly. What is the reason for losing fruit?

Jujube trees are flourishing and bear fruit. It is preliminarily judged that the phenomenon of flowering and fruit dropping is caused by the vigorous growth of jujube trees. This phenomenon appeared repeatedly in the early days of the establishment of our jujube garden, and it was completely improved after a series of management adjustments.

First of all, the reasons for prosperity.

The main reason for the vigorous growth of jujube trees is overnutrition, especially excessive application of nitrogen fertilizer. After these nutrients are absorbed by jujube trees, the branches are quickly utilized, so they grow luxuriantly and luxuriantly, which can make people feel strong at a glance.

Jujube trees grow vigorously, indicating that jujube trees are rich in nutrition. How can there be fruit drop?

Second, the cause of fruit drop caused by excessive growth.

Jujube trees grow vigorously until the branches and new shoots grow too fast, which is to say, they consume a lot of nutrients in the process of their growth, so there will be competition for nutrients between them and the growth of fruits. Jujube hanging on the side or end of branches cannot be compared with strong branches in terms of its own sturdiness and competitiveness. In the end, nutrients can only be intercepted by branches to maintain their own growth, and fruits can only be defeated.

In addition, due to the lush foliage, the inner chamber of jujube trees is covered with branches, which leads to shading, poor ventilation and less light, and jujube fruits will also fall off due to lack of oxygen and light.

Third, the solution.

In order to solve the problem of jujube trees growing vigorously and falling fruit, we should start from two aspects: controlling prosperity and preventing falling fruit.

1 Rational fertilization.

Reasonable fertilization means that according to the actual situation of soil under jujube trees, the proportion of nitrogen, phosphorus, potassium and other large elements must be mastered in the process of fertilization, especially to keep nitrogen in a moderate state without excessive nitrogen, which has a great effect on controlling prosperity. In general, it is most reasonable to apply organic fertilizer to jujube trees and control the ratio of nitrogen, phosphorus and potassium at 4:2: 1.

2. reasonable pruning.

Jujube pruning should be divided into winter, spring and Xia San seasons, with the principle of "shaping in winter, pruning in spring and picking in summer". By pruning, the vigorous branches of jujube trees are controlled, and the growth state of branches is adjusted, so that they grow in a peaceful and normal state, which is beneficial to the fruit setting of jujube trees to the greatest extent.

Picking the heart when pruning and directly picking off the thriving new branches and buds have the most direct effect on controlling the prosperity of jujube trees.

3 spraying foliar fertilizer.

The foliar fertilizer is sprayed at the flowering stage of jujube trees. Supplementing flowering nutrition to jujube trees is beneficial to fruit setting and fruit preservation.

The foliar fertilizer is directly sprayed on the leaves, enters the jujube tree through the pores on the leaves of the jujube tree, and also directly acts on the flowers and fruits of the jujube tree, so that the flowers and fruits need sufficient nutrition, thus playing the role of fruit protection and fruit drop prevention.

4 girdling or girdling.

Circumcision or girdling is to artificially control the nutrient supply of jujube, so that the organic nutrients produced by photosynthesis of jujube leaves do not flow back to the root system, but remain directly in the upper part of jujube for its flowering and fruiting.

The method is to cut one or two knives on the trunk or branches of jujube trees. The knife edge reaches the xylem, but it does not hurt the xylem, so that organic nutrients cannot be transported to the roots of jujube trees, and only stay in the upper part of jujube trees for flowers and fruit consumption. From the leaves to the flowers and fruits, and then to the nutrient transportation route of the branches, the branches can't compete for nutrition, so that the jujube flowers and fruits are fully supplied, and no flowers and fruits fall.

The girdling operation has certain technical requirements, so it should be guided by professionals when using it, or it should be carried out after mastering the technology by yourself to avoid bringing harm to jujube trees.

Spraying plant growth regulator.

Plant growth regulator, gibberellin, is mainly used in my jujube garden and sprayed during the flowering period of jujube trees, which can not only improve the fruit setting rate, but also strengthen young fruits and stalks and prevent them from falling off.

The use of gibberellin should be based on the actual situation of jujube trees, adjust the dosage and concentration, and control the appropriate fruit setting.

The vigorous growth of jujube trees is only one of the reasons for the fruit drop of jujube trees. Weather, poor pollination and diseases and insect pests can also cause jujube trees to drop fruit. For jujube fruit drop, we should also carefully observe whether jujube trees are affected by other factors, or take corresponding effective control measures according to the actual fruit drop situation.