Tea tree root stock grafting and seedling raising method

Abstract

The invention discloses a tea tree root stock grafting and seedling raising method. The method comprises the steps of stock selection and preparation, stock preparation, camellia variety matching, scion selection, scion elimination, root stock grafting opening cutting, grafting treatment and grafting management. For stock selection, tea trees which grow robustly, are free of diseases and insect pests and bear few fruits are selected, the best tree form is a single stem, the ground diameter is 5-10 cm, and the best trunk branches are 1 cm or above; for stock preparation, trunks and branches, 0.8-1m away from the ground, of stocks are cut off, and tea seedling roots with root crowns removed are used as the stocks, so that germination and growth of adventitious buds of tea tree root crowns are avoided, a large amount of sprout removal work in the tea tree seedling raising process is reduced, and the defects that tea tree short-spike cutting seedlings have no main roots, and tea seedlings are poor in drought and cold resistance are overcome; and in addition, the labor intensity of grafting, replanting and plant switching in an old tea garden is reduced, the grafting efficiency of tea trees is improved, and the purity of the seedlings is improved.

Description

technical field [0001] The invention relates to the technical field of tea seedling breeding, in particular to a method for growing seedlings by grafting root anvils of tea trees. Background technique [0002] Clonal tea tree varieties are usually bred by asexual propagation methods such as short ear cuttings, mother tree layering, tree stock grafting, and tissue culture. Mother tree layering period is long and the efficiency is low. Tree anvil grafting is suitable for the replanting of old tea gardens, but the work intensity is high, the work efficiency is low, and follow-up management is difficult. Tissue culture requires higher cultivation conditions and techniques. However, when carrying out short-ear cuttings, the short-ear cutting seedlings have a fibrous root system with a shallow root system, poor stress resistance at the seedling stage, especially drought resistance, and low transplant survival rate; if the soil and fertilizer conditions in the tea garden are not ...

AI Technical Summary

Problems solved by technology

Practice has proved that the disadvantages of the existing bud-stock grafting and breeding methods are: due to the strong germination ability of root cap adventitious buds, the new shoots germinated from adventitious buds grow rapidly. If the germination is not timely, the germinated new shoots will compete for the water and nutrients of the scion , leading to the death of the scion, therefore, the current method of bud-stock grafting and breeding requires a large amount of follow-up degermination work, and a certain number of seedlings are mixed in the seedlings, and the purity of the seedlings is not high. method, it also appears that the workload of degerming after grafting is large, and the purity of seedlings is difficult to guarantee.