Price and planting method of longan seedlings

Longan is one of the famous fruit trees in southern and southeastern China, the most popular in Guangdong and once in Fujian, wild or semi-wild in sparse forests in southern Yunnan and Guangxi, and often cultivated in southern and southeastern Asia. China's more well-received are Guangdong's Shixia longan, Fujian's Pumingan, Wulongling and Youtanben, and so on. Let's take a look at longan seedling prices and planting methods.

Market price of longan seedlings

The market price of longan seedlings is about 310 yuan per tree, but the prices vary greatly among varieties, specifications, producing areas and so on. Longan is a subtropical fruit tree, which likes high temperature and humidity, and temperature is the main factor affecting its growth and fruiting. Generally, places with an average annual temperature of more than 20 ℃ can grow well, and longan is resistant to drought, acid, barren and soaking. Longan grows well in red soil hilly land and dry flat land, and it has the advantages of easy cultivation, long life span, high yield and great economic benefit.

What are the varieties of longan trees?

1. Shixia longan: Shixia longan is a famous species of fresh food with a long history of cultivation. The original species came from Pingzhou, Nanhai, Guangdong and spread widely to Guangdong and Guangxi. There are three strains of yellow shell stone gorge, green shell stone gorge and palace powder shell stone gorge, which matured in the early and middle of August and are precocious varieties.

2. Puming nunnery: the crown of Pumingan tree is semicircular to round head-shaped, the tree is moderate, the tree posture is upright, the fruit is nearly flat and round, and the size is uniform. It matures from late August to early September, with high and stable yield, large fruit and high quality, but the thin skin is not suitable for baking.

3. Wulongling: the crown of Wulongling is round, the tree is vigorous, the tree posture is half-open, the fruit is large, the size is uniform, the sugar content and baking rate are high, and the shell is not sunken. It is the best variety for drying, and it is also suitable for fresh food, but it is easy to drop fruit. The fruit is more obvious in the next year.

4. Youtan Ben: Youtan has the advantages of stable yield, late ripening period, large fruit, high sugar content, non-sunken shell after baking, and not easy to break. it is an improved variety of dried fruit in Putian area, and it should be eaten fresh. However, it is easy to suffer from "ghost broom" disease, the stone is large, and the edible rate is low.

Grafting method of longan tree

The main results are as follows: 1. Scion selection: longan trees with low grafting can be long or short, but it is best to choose young and middle-aged trees under 10 years old from the point of view of easy operation.

2. Rootstock selection: for young and middle-aged longan trees under 10 years old, grade 1 or 2 oblique backbone branches can be selected as grafting rootstocks, and the branch diameter can be about 3-10 cm. Usually, 3-5 rootstocks are selected for 3-5-year-old trees, 5 for 6-year-old trees and 10 for adult trees.

3. Grafting method

① grafting incision: use a branch knife to cut a 1.5 cm cut parallel to the rootstock on both sides of the saw blade of the rootstock, reaching to the xylem, twisting the knife edge slightly toward the xylem, and then quickly loosening the grafting knife, that is, the grafting interface.

② cut the scion: the scion length should be 5cm / 6cm, the upper end should have 1 / 2 full axillary buds, the lower end should be cut into a 45-degree fracture with the scion, and the lower fracture surface should be cut into a long cutting surface similar to the cut length of the rootstock, reaching to the xylem, and the fracture and cutting surface should be smooth.

③ insert interface: put the fracture under the scion toward the rootstock, face the interface, and insert gently along the interface, its long cutting surface is close to the bark and pressed by hand at the same time.

④ interface fastening: first tie the interface with a special plastic film for grafting, and then wrap the rootstock and scion, and the axillary buds of the scion should be covered with single-layer film.

⑤ spraying against insects: sprinkle insecticidal and clear powder on the interface and the saw of the rootstock to prevent insects and ants from biting through the film.

Planting method of longan tree

The main contents are as follows: 1. Garden selection: longan planting garden should choose the soil with loose soil, deep soil layer, good air permeability and strong ability of water and fertilizer conservation, and choose the area close to the water source to build the garden. If the water can be diverted to build a pool to ensure spraying and drought irrigation, the sloping land can also be planted.

2. Variety selection: the selection of longan varieties mainly depends on the market demand, the adaptability of varieties in the cultivated areas and the level of cultivation techniques, such as Shixia Longan, Pumingan, Wulongling, Yutanben and so on.

3. Seedling selection: longan cultivation and seedling selection is an important technical link, which requires pure variety, robust plant growth, thick green leaves, well-developed whisker roots, no diseases and insect pests, and there are more than two mature shoots above the grafting interface of grafted seedlings.

4. Digging planting holes: the size of longan planting holes mainly determines the amount of soil organic fertilizer, and the basic fertilizers for filling holes are mainly topsoil, weeds, pond mud, garbage, pig and cow pen manure and chicken manure, which can be filled in layers or mixed, and then planted after 1 month or 2 months of backfilling.

5. Planting time: longan trees can be planted in all seasons except winter. Generally, it is best to plant longan trees in spring (before spring shoots are taken out and grow), but planting should not be too dense, and it is appropriate to plant 30-50 trees per mu.

6. Planting method: longan tree should be planted with the loose soil of the planting hole, the root neck level or 3 cm deep into the ground, and drenched with water to keep the soil moist, and avoid planting seedlings on rainy days as far as possible.