What conditions are needed for lychee flower bud differentiation?

Anyone who grows fruit trees knows that whether flower bud differentiation goes well or badly determines the yield and quality of the fruit trees, so it must be taken seriously when fruit trees undergo flower bud differentiation. We are all fairly familiar with lychee, and its economic value is extremely high. To achieve high yields, you need to start with flower bud differentiation, so what conditions does lychee flower bud differentiation need? Let's take a look together.

1. Time of flower bud differentiation

First you need to understand the time of its flower bud differentiation. Lychee flower bud differentiation varies depending on the variety and region. Generally, early-maturing varieties begin flower bud differentiation in October in autumn, while mid-to-late-maturing varieties begin flower bud differentiation in December. There are also varieties that begin flower bud differentiation in December and continue all the way to March of the following year.

2. Nutrient requirements

When the fruiting branches of lychee grow robustly and the tree vigor is moderate, it is easy to control the winter shoots and accumulate enough nutrients, which is beneficial to the plant's flower bud differentiation. The more nutrients the tree body accumulates, the better its flower bud differentiation will be. If the tree vigor is excessively strong and the plant's vegetative growth is vigorous, it is unfavorable to its flower bud differentiation, and it is very easy for flowers, pods, and leaves to sprout ahead of time, causing reduced yield; or the panicles grow too long, consuming too many nutrients, and the proportion of female flowers is relatively small, which will also cause reduced yield.

3. Temperature requirements

When lychee moves from vegetative growth to reproductive growth, the tree body's nutrients and hormone types and proportions will undergo obvious changes, so as to adapt to the needs of the plant's reproductive growth. During lychee flower bud differentiation, a large amount of cytokinin is secreted to promote flower bud differentiation. Winter temperatures are relatively low, and a long period of low temperature will inhibit the plant's vegetative growth and promote reproductive growth, so the quality of flower bud differentiation is good. If winter temperatures are high, vegetative growth is vigorous, and a large amount of nutrients will be consumed, the quality of flower bud differentiation will be relatively poor, and quality and yield will also decline. Different varieties have different temperature requirements. Generally, Baila and Heiye require 8-15 degrees, while Feizixiao and Baitangying require below 20 degrees.

The above is an introduction to the conditions for lychee flower bud differentiation. We hope it can help you. If you want to learn more related knowledge, please follow us.