1. Prepare the soil and soil management
The land is plowed up to combat flooding drainage. When the need for handling the potential risks from the soil (heavy metal residues, nitrates, erosion, flooding ... affect plant health and consumers), institutions and individuals must be SX expert advice and to record, on file handling measures.In the Tha
, they must be breeding cages and adopt measures to ensure waste does not pollute the environment and products after harvest.
, they must be breeding cages and adopt measures to ensure waste does not pollute the environment and products after harvest.
2. Density - planting distance
Depending on the variety, soil fertility, climatic conditions as well as intensive, investment levels that determine the density and distance Thanh Ha litchi cultivation reasonable. Proper planting distance is 7m fabric x 7m or 8m x 8m (density of 205 trees and 156 trees / ha). In intensive farming conditions, can grow to 3m x 4m distance 4m x 6m or (832 trees and the density of 416 trees / ha) or planting density on but until delivery canopy tree felled by 1 1 trees 4m x 6m gap or 6m x 8m (density of 416 trees and 208 trees / ha) to exploit the potential for high yields in the early years of the business cycle due to high density brings
Depending on the variety, soil fertility, climatic conditions as well as intensive, investment levels that determine the density and distance Thanh Ha litchi cultivation reasonable. Proper planting distance is 7m fabric x 7m or 8m x 8m (density of 205 trees and 156 trees / ha). In intensive farming conditions, can grow to 3m x 4m distance 4m x 6m or (832 trees and the density of 416 trees / ha) or planting density on but until delivery canopy tree felled by 1 1 trees 4m x 6m gap or 6m x 8m (density of 416 trees and 208 trees / ha) to exploit the potential for high yields in the early years of the business cycle due to high density brings
3. Seed planting
Asian. Thanh Ha litchi varieties:
- Origin: Thanh Son Commune - Thanh Ha District - Hai Duong Province. Show here still hold over 180 years lychees, yielding annually steady 300 - 400kg, good fruit quality.
- Features breed: Trees grow well, hemispherical canopy balance, dark green leaves. Inflorescences small, spherical, yellow green flower stalk. Fruit spherical, bright red when ripe, prickly little short. The average fruit weight 20,7g (45-55 fruits / kg), percentage 75.0% on average eat, the Brix 18-21%, pulp firm, dark sweet, aromatic. The average yield trees 8-10 years old 55kg / tree (8-10 tons / ha). This is the main crop varieties ripening, harvest time for 5/6 - 25/6.
- Thanh Ha litchi varieties must have a clear origin and establishments breeding and seed production should be state agencies competent to grant permits.
- Thanh Ha litchi varieties produced must have adequate record of the treatment measures seedlings, chemical use, time, name and purpose processor handles.
- In the case of Thanh Ha litchi varieties can not produce records to indicate the name and address of the organization, the individual and the time provided, the amount, type, method of processing the same
b. Standard seedlings:
Seedlings planted in 10 BC industry standards - in 2001, namely: human seedlings were planted by grafting polietylen polybags minimum size: diameter x 10 x 22cm height. Seedlings should have good power adapter, scion and rootstock developed a uniform, part puzzle stain was completely removed cord transplant, have well-developed root system, grow well, do not carry dangerous diseases insurance, rootstock diameter 2 cm above the ground is 0.8 to 1 cm in diameter slips 0.5 - 0.7cm, length slips from 30-40 cm and from 2-3 primary branches 1 or more.
4. Planting season
Thanh Ha litchi trees can be grown year round, but there are two most suitable time is supposed Xuan Thang 2-4 and for the April 8-10 calendar.
5. Planting techniques:
Asian. Manure pit and lining
- Dig a planting hole should be based on the principle fabric: poor soil to dig, dig small good land. Normally hole size: length x width x depth are: 0.8 cm x 0,80m x 0,6cm, poor soil hills louder dig holes, respectively size: 1m x 1m x 0.8m.
- Basal: the 1 hole: 30-50 kg of compost; 0.7-1.0 kg superphosphate; 0.5 kg of lime.
- When digging: to one side topsoil, subsoil aside. Topsoil mixed with fertilizer entire liner and fill up to the crater, the bottom layer of soil around the pit lined rainbow.
Preparatory work planting hole, manuring is conducted one month before planting.
b. how to grow
A small hole in the middle coast of the pit, tear up the bag and gently placed the tree into the hole, place the tree so that the root collar similar to or lower than the ground by 2-3 cm, backfilled and compacted by hand around corner. Plug the cord and the soft piles fixed force winds blew trees to avoid breaking the roots.
Need mulching moisturizing after planting trees with straw or dry grass 0.8 - 1.0 m; thick 7 - 15cm, stem from 5-10 cm.
6. Original Moisturizing Shower
In the dry season should use straw, hay, beans ... trunk to tree mulching moisturizing. In addition to moisturizing the tree measures also help to limit the growth of weed
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