How many years has the latest jujube been bearing fruit?

Red jujube grows in mountains, hills or plains below 1700 meters above sea level. It is a temperature-loving fruit tree with strong tolerance to drought and waterlogging, but it requires higher air humidity during flowering, otherwise it is disadvantageous to pollination and fruit setting, and is sensitive to light. It has strong adaptability to soil, barren and saline-alkali tolerance, but is afraid of the wind. Let's take a look at the fruit of jujube trees for several years.

How many years do jujube trees bear fruit?

Jujube seedlings usually bear fruit in the second year after planting. As the saying goes, "Peach, plum, four pear for five years, walnut and persimmon for six or seven years, mulberry can feed silkworms in seven years, and jujube trees can be sold for money." It means that the fruiting period of jujube is short.

How to protect flowers and fruits in jujube trees

1. To restrain vegetative growth, adjust the contradiction between growth and fruit, and promote fruit setting, such measures include root cutting, coring, sprouting, branch thinning, nail opening, ring cutting, cutting, fertilizer and water management, and so on. it can regulate the contradiction between nutrient distribution and operation between tree vegetative growth and flowering and fruit, improve tree nutrition level, and make more nutrients needed for flowers and fruits.

2. Spraying water at flowering stage can increase the air humidity, and the air humidity during flowering period is not less than 60% to 70%, otherwise it will be affected. The effect of spraying water in the evening or morning is good, generally combined with foliar fertilizer spraying 0.3% 0.5% urea.

3. Release bees in jujube orchard and increase pollination medium. some jujube varieties are self-pollination and some are cross-pollination. Intra-variety pollination or inter-variety pollination can set fruit well, and the effect of increasing pollination media is good.

4. Spraying plant hormones and trace elements, mainly gibberellin, 2.4 Mel D, paclobutrazol, dwarf, B9, indolebutyric acid, indole acetic acid, acetic acid, borax, boric acid and so on.

How do jujube trees bear more fruit?

1. Three sprays of florescence: the flowering period of jujube is longer, which can be divided into three periods: the early flowering stage, the full flowering stage and the last flowering stage, which can last for more than a month, that is, from late May to the end of June, and generally enter the flowering stage around June 8. Jujube blossoms like wet and afraid of dry, but at this time the weather is hot and dry, and there is a lot of wind and dust, which can easily reduce the dense leaves of the stigma of jujube, make the stigma adhere to a lot of dust, and seriously affect the normal pollination. At the same time, due to the harm of dry and hot wind, jujube transpiration increased, at this time, such as lack of fertilizer and water, it is easy to make the stigma withered and fall off, so spraying fertilizer, spraying water at flowering stage can greatly improve the fruit setting rate of jujube.

2. Reasonable pruning: jujube pruning can adjust the tree potential, make full use of nutrients, ensure the ventilation and light transmission of jujube, increase the fruit-setting position, and reduce the number of rotten fruit and fruit drop, so as to achieve the purpose of increasing production. Jujube pruning is mainly thinning, truncation and contraction. Should be done: sparse through dense branches, remove cross branches, cut off drooping branches, compress too high branches, strong trees retract lightly, weak trees retract, old trees remove old branches properly, and young trees prune around shaping. The time of pruning should be from the Beginning of Spring to jujube sprouting.

3. Timely manicure: manicure is annular peeling. Nail opening can inhibit vegetative growth, prevent jujube mad disease, improve the nutritional conditions of jujube flowers and young fruits, and make flowers and fruits fall less and sit more. Therefore, the agricultural proverb has the saying that "the jujube tree will bend over when it blossoms and cuts a few knives." Generally speaking, the yield of jujube trees can be increased by about 30% by opening armour. Nail opening should be carried out when the jujube tree blossoms at 1/3, and the opening should be 30-40 cm from the ground. The opening should be 0.5-0.7 cm wide and the depth should reach xylem, but the xylem cambium should not be damaged. The knife edge should be flat and do not leave stubble. After opening, apply an appropriate amount of pesticide to the nail mouth to prevent insect pests. Jujube trees that are less than 7 years old and whose trunk diameter is less than 10 cm or are not robust should not be manicured. The nail opening part should be replaced year by year.

4. New branch pinch heart: new branch pinch heart can control the uncoordinated growth of jujube crown, facilitate the formation of reasonable crown, dense and uniform branches, good ventilation and light transmission, control the excessive growth of branches that do not need to expand, and save nutrients. it is beneficial to improve the fruit setting and fruit growth of jujube. The experimental results show that the length of the jujube code of the new branch can be up to 45 cm, the maximum number of fruit can be 12, and the length of the jujube code on the unpinched branch is only 25 cm, and the maximum number of fruit is 5. At the stage of jujube branch germination in mid-late May, 5-7 cm-long new branches growing in the dense branch area of jujube tree should be selected.

5. Fertilization and watering: jujube needs water and fertilizer at the early flowering stage and the last flowering stage. Generally, the yield of each adult tree can be significantly increased by applying 15 kg cake fertilizer and 1 kg ammonium bicarbonate or 50 kg human feces and urine at the early flowering stage and 1 kg urea or 1 kg compound fertilizer at the last flowering stage. The method is to dig a circular ditch with a depth of 40 cm and a width of 40 cm from the tree trunk, sprinkle the fertilizer into it, fill the ditch with enough water, and fill the ditch after the water seeps.

6. Releasing bees during flowering: jujube is a typical insect-pollinated flower, which cannot be pollinated by itself or by the wind, but it is rich in nectar and fragrance, and bees are the best pollination medium. During the florescence, the beehives were placed evenly in the jujube orchard. The distance between the hives was no more than 300m. The bees began to move at 11 ℃, and the most active at 16-29 ℃. The use of honeybee pollination can greatly increase the fruit setting rate. However, during the release of bees in the jujube orchard, it is strictly forbidden to use carbaryl and pyrethroids, which are highly toxic to bees.