Lychee shoots Grafting techniques

Submitted by szadmin on Wed, 04/22/2009 - 16:54
in Orchard
摘要: 


    Bud grafting method using grafted seedlings litchi cultivation, grafting a high survival rate (75% or more)

Bud grafting method using grafted seedlings litchi cultivation, grafting a high survival rate (75%), short-cycle (from planting to just a year and a half to two years), and low cost. The technology of the seedling below.
1 medium to cultivate
Means the stock shoots shortly after seed germination, seeds of nutrition have not been completely consumed during this period of time before the End of seedlings, also known as germ. Lichee choose to do the nuclear large rootstock seeds (small nuclear species as a result of not enough young shoots, inconvenience and graft survival rate is low and should not be selected), early in May to July litchi seed maturity, seed germination in the sand bed, about 3 days seed, that is broadcast in the nutrition bag, one bag. Nutrition bag size 12cm × 17cm, with loose fertile soil for Nutrient fertilizer. Nutrition bags to keep moist. Shoots can be unearthed in two weeks after showering facilities by 0.2% or 0.3% of urea fertilizer, about three weeks after emergence, the two mature leaves turn green, the branches become brown from the green, when is the best grafting period.
2 grafting methods
10 ~ 30-year-old trees, the litchi seed was drawn to select the students for just Lignification scion shoot better. This leaves just turn green shoot, just shoot from the green to brownish-yellow, high graft survival rate. Shoot or too old will reduce the survival rate. Scion shoots best at the top with 2 ~ 3 months of the period of bud branches, fast germination, rapid growth, easy to be stronger.
The use of split connection. Sturdy shoots take on a pair of Leaf blade with the bottom cut off and left 5 ~ 10cm long incus piles, pile cross-section from the middle longitudinal anvil knife cut deep about 1cm. Relative to the base of the scion from shallow to deep on both sides of the cut a long section, about 1cm, so the base into a wedge. Scion base cut to insert a good stock split mouth, with width 5cm, length 12cm fixed bundle of thin-film article. Rootstock and scion vulnerable as a result of dead water, moist is the key to survival. Method is to graft seedlings after the close of the nutrition bag placed in the width of 1m, the water used for the arched bamboo sheds, etc., with plastic film masked, surrounded by soil compaction. Attention to the length can not be too long, can be about 5m, Arch is not too high, not grafted seedlings for the degree of pressure, otherwise good moisturizing effect.

 


 

3 after the management of graft
Coverage within two weeks after the membrane cover to keep shading to prevent direct sun so that temperature inside shoots burns. Maintain shed more than 95% humidity. If the humidity is not enough water to cover the timely re-open coverage. General grafting 1 ~ 2 weeks after the bud then that germination. With the next bud germination, show leaves, gradually to give the scattered light. 3 ~ 4 weeks after the leaves mature, the beginning of ventilation was improved, after transplanting to the nursery for conventional management.