Pruning in spring and summer, longan trees should cultivate a natural round-headed crown. Within 2-3 years after planting, the trunk is 0.5- 1 m, and after 3-4 main branches are evenly distributed, they are pruned year by year to increase the number of branches and finally form a round crown.

The branching point of high-pressure seedlings is low, and the crown is often composed of long branches starting from the base. When shaping and pruning, special attention should be paid to the rapid growth of young trees, and the longer spring shoots and summer shoots should be trimmed or truncated, and the drooping branches should be cut off to prevent the crown from being too low.

Prune the inner branches, over-dense branches, cross branches, pest branches and weak branches in time to promote the young trees to form a good tree shape. All ears should be pruned within 3-5 years after planting to reduce nutrient consumption and promote the growth and fruiting of summer and autumn shoots. The dead tip of the ghost broom should be burned immediately.

Extended data:

growing environment

1, temperature: Longan grows in the south subtropical region, likes warm and humid climate, can endure short-term frost, and will not freeze to death in a short time at the low temperature of 0-4℃. The annual average temperature in Putian, Fujian, China is 20-22℃, and that in Sichuan is about 65438 08℃. Short-term low temperature in winter is beneficial to the differentiation and formation of longan flower buds.

2. Moisture: annual precipitation in longan producing area1200-1600 mm. ..

3. Illumination: Longan is a positive tree species and needs sufficient sunshine. ?

4. Soil: sandy loam is the best, followed by sandy red soil and clay. The pH value of soil is 5.4-6.5, which is most suitable for growth, while alkaline soil is not suitable for planting.