What about the litchi year?

There are many varieties of litchi, because of physiological and climatic reasons, there is a common phenomenon of big and small years, and the phenomenon of big and small years of litchi will seriously affect the income of growers. So try to avoid or reduce the size of the phenomenon when growers pay particular attention to the problem, then litchi big and small year how to do? Come and have a look with the editor.

1. Do a good job in fertilizing

The main purpose of re-applying shoot-promoting fertilizer is to restore tree potential and promote the emergence of autumn shoots. at this time, fertilization is mainly quick-acting fertilizer, combined with high-quality organic fertilizer. The fertilization time is applied immediately after fruit harvest, so that the tree can absorb the fertilizer effect and restore the tree potential quickly, so as to prevent the fruit from taking away nutrients and dying or unable to pull out the autumn shoots. In addition to high-quality organic fertilizer, these nitrogen, phosphorus and potassium fertilizers account for 50%, 40% and 20% respectively. This time, autumn shoots are required to be drawn twice. If you want to shoot three times, you also need to apply chemical fertilizer. After the best shoot extraction, it is necessary to control the amount of nitrogen fertilizer to prevent winter shoots from coming out.

2. Drought prevention

Water is an essential resource for litchi production. If there is not enough water, litchi will not shoot or pull out shoots of poor quality, and the fertilizer can not be absorbed by the root system. Therefore, in the long-term drought, it should be pumped and irrigated in time, otherwise the fruit tree can not pull out the shoot or pull out the short shoot, especially the late shoot, that is, the fruiting mother branch in the second year, which is very easy to make the fruiting mother branch become short and small in case of drought or north wind. it directly affects the fruit in the second year, but because the fruiting mother branch is short and small, the fruit shape is smaller and the yield is lower.

3. Moderate pruning

Pruning is an indispensable link in litchi production, such as pruning, changing crown structure, improving permeability, increasing nutrition accumulation, reducing nutrient consumption of ineffective branches and promoting the germination of new branches. As for the pruning time, we should also pay attention to the pruning time: young trees and young fruit trees should be pruned early, immediately after fruit harvest, generally heavy pruning, while adult and next year fruit trees are generally pruned and lightly pruned after the first autumn shoot growth. the main pruning objects are dense branches, shade branches, cross branches, drooping branches, disease and insect branches and so on. When pruning, remove the branches slightly from the base, starting from the big branches inside the crown and toward the periphery of the crown.

4. Prevention of insect pests

After the growth of autumn shoots, it is inevitable to be harmed by insect pests, and in order to ensure the robust growth of autumn shoots and bear dense branches, insect pests must be well controlled, such as beetles, leaf moths and so on. If you want to control them well, you must first choose good pesticides, choose pesticides with high efficiency and low toxicity, and use them alternately so as not to produce drug resistance.

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