How to promote flower bud differentiation of longan

The flower bud differentiation of longan is the basis for the formation of flowers, and flowers are related to fruit, so the quality of flower bud differentiation is directly related to the yield and quality of the year. Therefore, to do a good job of longan flower bud differentiation has a significant effect on yield and quality, so how to promote longan flower bud differentiation? Let's take a look.

1. Drug control

For the plants with too strong tree potential, ethephon can be sprayed from November to December, which can obviously inhibit winter and promote flower bud differentiation. When the autumn shoot appears or the winter has germinated, ethephon can be sprayed at this time, but pay attention to the concentration, can accelerate the removal of winter leaves and retain the tender stem and its growth point, if the effect is not obvious, can increase the concentration in a spray. Spraying is to pay attention to the leaf surface, leaf back is appropriate, must not be the same planting, the same branch repeated spraying or repeated spraying, so as not to cause plant fruit drop, not conducive to late growth.

2. Apply potash fertilizer in winter

Longan has a great demand for potassium, and the application of potassium fertilizer in winter can obviously improve its cold resistance and freezing resistance, which is beneficial to the differentiation and formation of flower buds. Generally, 1.5-2 kg of potassium chloride is applied to each plant, and it is usually applied in a ring trench in December. If the soil is too dry, it can be properly watered after fertilization. At the same time, during the thawing period, foliar fertilizer can be sprayed with low concentration potassium dihydrogen phosphate and potassium chloride solution 2-3 times, once a week.

3. Moderate ring cutting

Ring cutting is also a common measure to promote flower bud differentiation in production, which is generally carried out before autumn shoots are fully aged and before winter. It can be chosen on the primary or secondary branches, but it is usually not ring-cut on the trunk. Ring-cutting is carried out at a smooth place 10-15 cm away from the branch, with a width of 0.2-0.3 cm and a depth of up to xylem, but it is not advisable to damage the young xylem so as not to cause irrecoverable loss to the plant. The wound should be disinfected after ring cutting to prevent germs from invading from the wound and causing plant infection.

4. Tie up the wire

For young fruiting trees, because the tree is weak, it is not suitable for ring cutting, so the method of binding iron wire can be used to promote its flower bud differentiation. Attention should not be paid to excessive force when binding the wire, so as not to break the bark, the time of encircling is also determined by the thickness of the trunk, and the changes of the leaves can also be observed. when the leaves turn yellow, they should be released in time to restore the tree potential as soon as possible.

The above is how to promote longan flower bud differentiation, hope to help you, want to know more related knowledge, please pay attention to us.