How to control the low fruit setting rate of planting jujube trees

1. Pay attention to shaping and pruning because the branch and bud types and growth and fruiting habits of jujube trees are different from other fruit trees, and they are not sensitive to pruning, so they must be guided according to the situation, shape with branches, trim lightly, and combine winter and summer pruning, so as to make the distribution of main branches reasonable and hierarchical. After the large branches with good direction and large load are selected, the dense branches, cross branches, disease and insect branches should be thinned from the base without pity. Cut the weakened jujube head and cut off 1 or 2 secondary branches near the cut mouth to make it sprout a new jujube head, that is, the so-called "two scissors". The drooping part of the backbone branch should be retracted properly, the internal and external tree potential should be balanced, the outward movement of the fruiting part should be prevented, and the new jujube head which has been bent and sprouted at the bend should be retracted.

two。 Control the vegetative growth of the tree and cut off the root: for young and prosperous trees, part of the root system can be broken. Jujube head heart: after the jujube head germinates, grows fast? Consume a lot of nutrients, too much jujube head too close, in June in the jujube head length 1 stroke 3 places to pick the heart, can concentrate nutrition and improve the fruit setting rate.

3. There is a large amount of water required for flowering and spraying flowering and the construction of various organs during flowering, and water should be irrigated during flowering. Clear water should be sprayed every morning and evening in full bloom to improve air humidity, facilitate flower germination and increase fruit setting rate.

4. Change the nutrition transport to the trees whose trunk diameter is more than 10 cm to 12 cm in diameter and enter the full fruiting stage. In the early flowering stage, when the weather is clear, armour can be opened. When opening a nail, first scrape off the old skin to expose the white phloem, and then peel it around with a nail opener or cutting interface for a week, up to the width of the xylem 0.3~0.6cm? Generally, it can heal in 20-25 days, starting at 10-20 cm from the ground in the first year, and then open upward year by year, do not reopen the original ring peeling mouth, the two-year ring peeling mouth is 3-5 cm apart, after opening the nail to the bifurcation of the main branch, and then open the "back nail" from the bottom up. At the nail mouth, apply stomach poison or contact pesticide with long residual period to prevent skin-eating moth larvae from eating healing tissue.

5. Jujube orchard flower nectar plate is well developed, when in full bloom, honey is rich, fragrance is strong, it is a typical insect-pollinated flower, bee release can improve the fruit setting rate.

6. Spraying 10mg / kg 920 at full bloom with growth regulators can increase the fruit setting rate.