Grafting method for improving wind resistance of cotton tree grafted seedling

Abstract

The invention discloses a grafting method for improving the wind resistance of a cotton tree grafted seedling. The grafting method comprises the following steps: selecting a robust cotton tree seedling which is free from diseases and insect pests for serving as a stock; selecting a robust upright cotton tree branch bud which is equivalent to the diameter at breast height of the stock for serving as a scion; cutting the stock into a concave shape, cutting the scion into a convex shape, and tightly embedding the scion and the cambium and phloem of the stock by using a concave-convex embedding grafting method without leaving any gap or exposing any white part; and wrapping and fixing an interface with a plastic film. According to the grafting method disclose by the invention, a mortise and tenon structural principle is applied, so that the contact area between the scion and the phloem of the stock is increased greatly, and the stability is enhanced; the interface between the scion and the stock is combined tightly and smoothly, so that a good interface healing effect is achieved, the formation of burls is prevented, and a good landscape effect is achieved; and compared with a current cotton tree grafting technology, the method has the advantages that the wind resistance of nursery stocks is effectively improved, 7-level wind power can be resisted, and the wind resistance of the grafted seedlings is remarkably superior to that of seedlings grafted by using grafting methods such as a slope cut-grafting method and a cleft grafting method.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation and relates to a grafting method for improving the wind resistance of kapok grafted seedlings. Background technique [0002] Kapok (Bombax ceiba) has rich and diverse genetic resources in my country, such as the color of petals, the size of flower diameter, and the density of flowering. Among them, there are some varieties with excellent ornamental properties, such as "Kapok with yellow flowers", "Large-flowered kapok", "multi-flowered kapok", etc. However, excellent germplasm resources are always extremely scarce, and some varieties have reached the endangered stage. Therefore, protecting resources and expanding the number is a top priority for scientific researchers. [0003] The sowing and propagation of kapok seeds is easy to cause the separation of offspring traits, which is not conducive to the preservation of the genetic traits of the female parent, and the growth cycle is long, ge...

AI Technical Summary

Problems solved by technology

[0003] The sowing and propagation of kapok seeds is easy to cause the separation of offspring traits, which is not conducive to the preservation of the genetic traits of the female parent, and the growth cycle is long, generally it takes 4 to 6 years to bloom and bear fruit; kapok cutting propagation takes a long time, has no main root, and the root system is shallow, After becoming useful, the wind resistance is poor, and it is easy to lodging; although the grafting and propagation of kapok can effectively preserve the genetic traits of the female parent, and shorten the growth cycle, so that it can grow quickly, and it can bloom in the next year after grafting and survival, but the existing grafting methods also exist Many disadvantages, 1) The scion is easy to shift and fall off, and the contact area of ​​the phloem is small, resulting in a low survival rate of grafting; 2) The healing effect of the interface between the scion and the rootstock is poor, and the interface is easy to nodulate, resulting in poor landscape effect, and it is easy to rot and breed diseases and insect pests , so that the seedlings after grafting have poor wind resistance, and there is a great potential safety hazard, so it is difficult to use in urban gardens

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