How long does it take to control lychee? When will lychee be controlled?

How to carry out lychee control autumn shoots.

14:37, 12 October 2012

Keywords: How to control the autumn shoots of lychee Abstract: July 30, 2001First of all, we must make it clear that the control of shoots is to accuse the extraction of winter shoots, as well as the growth of late autumn shoots, that is, there is no vegetative growth during the flower bud differentiation stage; Flowering is promoted by cultivating strong autumn shoots...

30 July 2001.

First of all, we need to make it clear that the control of shoots refers to the extraction of winter shoots, as well as the growth of late autumn shoots, that is, the absence of vegetative growth during the flower bud differentiation stage; Flowering promotion is to cultivate strong autumn shoots and accumulate enough nutrients to ensure that the flower bud differentiation can be carried out smoothly and the flower spikes can be extracted as scheduled. In order to achieve this, a series of cultivation management from the time of fruit picking will be carried out around the growth of autumn shoots.

Secondly, when cultivating autumn shoots, the best extraction time of the last autumn shoots was mainly determined according to the growth characteristics, management level, planting conditions, and natural environment of each variety. For example, the differentiation period of safflower buds in March is in October, so the last autumn shoots should be matured in the first half of the month at the latest, considering that the new shoots generally need to mature in the month, so the last autumn shoots are drawn from the second half of the month to the beginning of the month. However, in areas where low temperatures come early, the last autumn shoots should be released early, mainly because the time required for new shoots to mature will be extended due to low temperatures.

On the contrary, Hainan Island and other places can be extended for a few days. However, the specific time depends on the experience and strength of the growers in each region.

Finally, when the last autumn shoot is extracted, when there is an unsatisfactory situation, it can be corrected by the corresponding technology. If the last autumn shoot is drawn too early, in order to prevent the winter shoot from being extracted: by cultivating slightly longer shoots, the time required for their maturity is appropriately delayed; When the shoots just turn green, spray the polynucleotides of the sub-control tip (Proto-Huaguoling).

If the last autumn shoot is withdrawn a little later, and the new shoot can not mature as scheduled, it can be sprayed at the appropriate time to stop the growth of the new shoot, and then spray - subpolynucleotides to increase the leaf thickness and chlorophyll content. In arid winter areas, root cutting can also be used to reduce root viability. Reduce water absorption and achieve the effect of preventing winter shoots.

After years of practice, the most mature technology of lychee shoot control and flower promotion is circumcision or spiral ring peeling, that is, ring cutting or spiral ring peeling is carried out after the last autumn shoot is ripe, and then spraying the tip control tip control tip control to promote flower promotion has the best effect. However, weak trees and poorly managed orchards should be used with caution to avoid causing defoliation.

The growth of lychee also has its natural laws. Experienced growers will allow the trees to fully rest and sleep in autumn and winter. There will be a good harvest next year, so the specific operation still needs to be carried out by the fruit farmers.

When the growth of new shoots basically stops and the leaf color turns from red to green, the second fertilizer is applied to promote the new shoots to turn green quickly and thicken the branches. After the new shoots turn green, a third fertilizer is applied to accelerate the ripening of the new shoots. In the first year after planting, the roots are small and the trees are small, so the "Ribery Yanwo water-soluble fertilizer" can be applied to the top-level, and the dual technology is introduced, which dissolves quickly and has a high absorption and utilization rate.

Young trees have few roots and weak fertilizer absorption ability, so they can spray foliar fertilizer 5-6 times a year.

Fertilizer and water management of 1-2-year-old young trees after planting can promote root groups and total leaf area at shoot tips. After planting, the root system of the lychee seedlings is few and weak, and the absorption capacity is also weak, so it is not suitable to fatten and water too much. Fertilization is based on the principle of rotting and high-quality, nitrogen-based with a small amount of phosphorus and potassium fertilizer, less and fine, and diligent and thin application.

The young shirt of the year of planting can be used as a chain tree, and the thin fertilizer and water can be applied 1-2 times a month. Clause.

In the second and third years, it is mainly to increase the amount of roots, promote shoots and strengthen shoots. A fast-acting fertilizer based on nitrogen fertilizer was applied to the top bud of each shoot to promote the rapid growth of new shoots. When the leaves turn from red to green, the second fertilizer is applied to promote the rapid greening of the branches, improve the photosynthetic efficiency, and accumulate nutrients. It can also be fertilized again after the new shoots turn green to accelerate the aging of the new shoots and shorten the shoot period.