Planting technology and management of longan

Longan is a tropical fruit in the south, which belongs to the same family as litchi, but there are many differences, that is, planting and management will be different. Longan planting needs certain environmental conditions, and the main purpose of management is to create the most suitable environment for its growth. Among them, longan has strict requirements on temperature and can not be frozen, so the cultivation area is limited, and the focus of management is to focus on temperature. Now let's see how to operate and manage.

1. Build an orchard

The orchard chooses in the small hills, gentle slopes, the best, sunny slopes, growing well. Do not face the wind, the soil should be loose deep soil, acid and alkaline slightly acidic, the general soil requirements are not strict, can be planted in a variety of soils, the common are red soil and yellow soil. Planting on gentle slopes will drain better than flat land. There should be no other planting varieties around the orchard to avoid flour bunching.

2. Seed treatment

The seeds are completely removed from the pulp, washed in clean water and soaked for 2 to 3 days. After absorbing water and expanding, the seeds will slowly break through the seed coat. After that, the water should be changed every day and soaked for a week. After all the seeds are broken, the seeds can be put into the seedling soil to raise seedlings and wait for germination. Need to spray water every day to moisturize

3. Planting

Seed germination and seedling growth to about 1 meter can be transplanted, pay attention to the seedling is not too dense, to leave room for growth. Digging holes for planting, transplanting with soil balls is the best. The soil balls are 1/4 in diameter of the seedling height, and then the holes are twice as large as the soil balls and half a meter deep. Fertilize the bottom to mix the subsoil, plant, cover the soil, harvest, and finally water and cover the topsoil.

4. Pruning

Young trees, about 60 cm above the ground, cut short and set the stem, promote new branches, and the new branches mainly leave 4 to 5 strong branches as the trunk, and then remove some small and weak branches. After growing up to about 2 meters, they will pick off the heart, control the growth and continue to stay, and then keep the branches at each level. Can be updated at any time. But the main buds should be removed at any time, and the extra buds in the upper part should be removed. Adult trees in spring should promote new shoots, leave strong shoots, remove excess leaf buds, and do not grow too much. It is necessary to control the tip in summer, leaving a small amount of strong tip. Early autumn shoots can be retained, late autumn shoots can be removed, garden should be cleared in winter, withered branches and sick leaves should be cut.

5. Fertilizer and water

Young trees mainly apply nitrogen fertilizer, grow plants, cooperate with phosphorus and potassium fertilizer, promote root system and strengthen tree trunk; adult fruiting trees, the main base fertilizer in spring is more than 1000 jin per mu, less chemical fertilizer is applied, fertilizer is needed at flowering stage, manure is applied many times in fruiting period, proper amount of topdressing is not harmful to fertilizer. Young trees grow vigorously and their roots are well absorbed. Watering can be seen by soil moisture watering. Adult trees should be watered according to stages, once a month in the early stage, less watering in flowering, shelter from rain, and watering in one to two weeks during the fruiting period.

Longan planting management should pay attention to fertilizer and water management and young tree cultivation, adult tree management, planting and seedling cultivation is the premise, planting and maintenance is the key.