Why does this green jujube only bloom and not set fruit?

Jujube flowering does not set fruit, considering the vegetative growth is too vigorous, or the poor pollination caused by light, insufficient fertilizer and water, boron deficiency, etc. Reducing the use of nitrogen fertilizer, increasing the application of phosphorus and potassium fertilizers, supplementing boron fertilizers and calcium fertilizers, and spraying potassium dihydrogen phosphate plus amino acid foliar fertilizer to accelerate the use of lenboron plus brassin, which can promote flower bud differentiation, promote pollination, and improve fruit setting rate.

The fact that green jujube only blooms and does not set fruit may be caused by the following reasons:

1.Excessive tree vigor: Jujube trees grow too vigorously, resulting in excessive consumption of nutrients, making it difficult to enter the normal reproductive growth period, or lack adequate nutritional support after entering the reproductive growth period.

2.Weather conditions: High temperatures or dry weather during flowering may affect pollen survival and the success rate of pollination in the later stage, which in turn will affect the fruit set.

3.Under-formulated pollinators: Under-formulated pollinators lead to poor pollination and inability to produce fruit.

4.Insufficient nutrients in the tree: Jujube trees do not receive sufficient nutrients** during the growth period, resulting in the inability to bear fruit.

5.Pest and disease problems: The presence of pests and diseases may affect the growth and fruit setting of jujube trees.

6.Lack of pruning: Lack of pruning can lead to poor ventilation of the tree, affecting fruit set.

To solve these problems, the following measures can be taken:

1.Control tree potential: Regulate tree growth by pruning and fertilizing to avoid overgrowth.

2.Ensure pollination: Configure enough pollinating trees to increase pollination and fruit set.

3.Increase nutrition: Reasonable fertilization to provide sufficient nutrients for jujube trees.

4.Prevention and control of pests and diseases: Take timely measures to prevent and control pests and diseases to ensure the healthy growth of jujube trees.

5.Prune branches: Prune branches regularly to improve the ventilation and light conditions of the tree, which is conducive to fruit setting.

By taking these measures, the fruit setting rate of jujube trees can be effectively improved.

Answer: Some varieties require interpollination to bear fruit easily, while others do not. It is best to pollinate the tree, and it is at least 8 to 1. And whether the planting spacing is too dense and impermeable, and the pollen cannot be transmitted.

First, there are no pollinator trees. Second, jujube flowers are too small and not fragrant enough, and sometimes they can't attract bees to pollinate. The problem of not being able to sit still is multifaceted.

I can't sit still with a single variety of summer flowers, but I can set fruit in autumn, and others generally report this. There was no such problem when there were three varieties planted before, but then I simply bought a few other varieties of bowl seedlings and grafted them to cross-pollinate. If I can't sit still, I will consider the two problems of lack of nutrients and no insect pollination.

Early in the morning, why doesn't the flowering bear fruit? Because they didn't go to the grave, he didn't bear fruit.

Sometimes, growers find that the planted jujube trees grow and develop very well and have lush flowers, but when they are in full bloom, they have no fruit or very little fruit. What is the reason for this? In fact, there are many reasons why jujube trees do not bear fruit after flowering.

Next, we will go into detail about the various causes and how they can actually be prevented.

1. Reasons. The most common reason is that the fruit type is too vigorous, which is likely to be a lack of nutrients, excessive growth and development, and excessive branches, which will cause the jujube tree to consume too many nutrients and cannot enter the reproductive growth and development, or there is no nutrients suitable after entering the reproductive growth and development. The second reason may be due to high temperature and drought, if there is a high temperature drought during the fruiting period, it may affect the survival of bee pollen and its pollination pass rate. The third possibility is that the pollination tree configuration is not enough, which will cause the pollination to be poor and not fruitful.

In the end, it may be due to the fact that the bee pollen is wet and cracks when it is raining, and it is impossible to inseminate due to death.

2. Prevention methods.

1.Controls growth and development.

In the early stage, it is necessary to pay attention to the shaping and beauty of the trunk, and after clarifying the excellent tree shape, you can prune and repair the tree skills that disturb the tree shape anytime and anywhere, and there is no need to consume nutrients on the branches, and moderately pick the top of some branches. That controls vegetative growth. Subsequent early fertilization, control the independent demand of basal fertilizer, it is best to apply organic fertilizer, in addition, there is no need to apply too much fertilizer.

2.High temperatures and droughts.

The flowering period of jujube trees is from May to July, and it is a very hot season in many areas, and it is hot at the moment, but there is a possibility of drought and precipitation. If there is a drought, you can water it after the temperature has cooled down at dusk, and daily perseverance will alleviate some of the drought conditions, or sprinkle water to increase the relative humidity of the air. Keep an eye on the temperature, collect bee pollen before it rains, and manually pollinate it after the rain.

3.Pollinated trees.

Jujube trees are monoecious and self-pollinating, but some species also need to be pollinated to increase the fruiting rate and ensure fruiting. Sometimes some naphthalene acetic acid can be used to adjust growth and development. Keep the flowers, drive the results.

For example, gibberellin, sprayed after blooming, can also be fruited if the powder is ineffective.

An inflorescence can grow into 4-5 small fruits Under normal circumstances, some young fruits can automatically drop fruits, but after natural fruit dropping, there are still many fruit sets, so manual assistance is needed to thin the fruits. The fruit in the young fruit stage of the slender, long branches, near the ground branches cut off, and then the dense fruit, small fruit, yellow disease fruit thinned, each inflorescence to leave no more than two fruits, but to each inflorescence to leave 1 fruit is better. Thick branches can leave more fruits, and young and thin tips should leave less fruits.

By November, if there are too many fruiting branches, the flower spikes and young fruits at the end of the branches can be cut off and combined with extra-root topdressing (spraying complex nucleotides).

Fruit thinning is often carried out in years with a particularly high number of fruit sets, and fruit thinning can significantly increase the size of the fruit and improve its quality and commerciality. Fruit thinning should be carried out in the young fruit stage after flowering, and too many and too dense small fruits, deformed fruits, diseased fruits, insect fruits, etc. should be thinned.

The most common reason why jujube trees do not bloom and do not bear fruit is that the tree is too vigorous, which is likely to be overnutrition, growth, branches and leaves are too vigorous, which will cause jujube trees to consume too much nutrients, and it is difficult to enter reproduction and growth, or there is no nutritional support after entering reproductive growth. Second, it may be due to the high temperature and drought weather, which may affect the survival of pollen and the successful pollination rate during the flowering and fruiting period.

Control growth: In the early stage, we should pay attention to the shaping of the trunk, after determining the good tree shape, you can prune the branches that disturb the tree shape at any time, consume excess nutrient branches, and appropriately top some branches, so as to control the vegetative growth, and then fertilize in the early stage, control the amount of nitrogen fertilizer alone, and apply the balanced water-soluble fertilizer of Hai and Weihai in the early stage of growth, containing nitrogen fertilizer and balanced content, and will not supplement too much while supplementing the nitrogen of the jujube tree.

The reason why the jujube tree does not bear fruit is that the tree is too vigorous.

Solution: In the full flowering period of the jujube tree, the bark can be peeled in a ring at the base of the main branch, as deep as the xylem, and the width is about centimeters, roughly how thick the bark is.

The second reason why jujube trees do not bear fruit: there is no pollination tree.

Generally, new trees will bloom and bear fruit in the first year, and in the second year you will find that the dates only bloom and do not bear fruit, which may be because you did not prune them when you finished picking the dates in the first year, resulting in the fact that the dates may not bear fruit after a few years.

It should be no pollination, grafting!

Suitable pollinator trees can be appropriately configured. Allocate the right pollinator tree at the right time, and at the same time attract bees, strengthen pollination, and increase fruit setting rate. Proper foliar top dressing. Spraying a certain amount of foliar fertilizer in different periods has a certain promoting effect on the pollination of jujube, flower and fruit preservation.

There are many reasons for the bottom fruit set, such as:

1. Poor pollination and fertilization: it may be rainy during the flowering period and there is no pollination tree.

2. Jujube flowers are too small and not fragrant enough, and sometimes they can't attract bees to pollinate.

3. The tree is not nutritious, the water and fertilizer are not high, and the lack of boron, calcium and other elements is also known as Indian jujube and hairy leaf jujube. Daqing jujube is crisp, juicy and sweet, and tastes apple, pear and jujube, which can be described as "one jujube with three flavors". It also has high nutritional value, has the reputation of "vitamin pills", more food can purify the blood, beauty and beauty, with purifying blood, helping digestion, beauty and other health care effects.

Daqing jujube grows very fast, has the characteristics of flowering and fruiting while pulling branches, and needs a lot of nutrients, therefore, the base fertilizer should be increased: the base fertilizer is mainly rotted chicken and duck manure and compost, and 3000 kg per 1 15 hectares, 50 kg of compound fertilizer, 50 kg of phosphate fertilizer, and the fertilizer is evenly applied in the soil layer of 40 cm. Nitrogen fertilizer should be applied before flowering, nitrogen, phosphorus and potassium fertilizer should be applied together at the young fruit stage, and nitrogen fertilizer should be applied appropriately after harvest.

Foliar fertilizer is sprayed once every 15 days, mainly nitrogen fertilizer in the early stage and potassium dihydrogen phosphate in the later stage. Water 3-5 times throughout the growing season, focusing on watering flowering water and fruit setting water, and always keep the soil dry and wet.