A method for propagating willows by sowing cuttings with single-bud short branches

Abstract

The invention discloses a method for broadcast sowing and cuttage reproduction of willows through single-bud short branches. According to the method, thin branches of nursery stock are used as a reproduction material, the single-bud short branches are adopted as cutting slips, the reproduction material can be fully utilized, the reproduction coefficient is obviously increased, and clone nursery stock of the neat specification can be produced. The cuttage survival rate is increased by growing seedlings in a greenhouse and applying a GGR6 growth regulator, the growth cycle of the nursery stock is prolonged, the amount of growth of the nursery stock is increased, the outplanting rate of the nursery stock is also increased, the production cost is lowered, and the method is quite suitable for engineering afforestation which is large in needed seedling quantity and high in requirement for the specification and quality of the nursery stock.

Description

technical field [0001] The invention relates to seedling cutting propagation technology, in particular to a method for propagating willows by sowing cuttings with single-bud short branches. Background technique [0002] Willow has the characteristics of strong adaptability, fast growth, pruning resistance, strong germination, soft branches, and beautiful crown shape. It is widely planted on the banks of rivers and lakes, roads and courtyards. It is a very common landscaping tree species. [0003] There are mainly two kinds of willow seedling raising techniques, cutting seedling raising and sowing seedling raising, and cutting seedling raising is more commonly used. [0004] Regarding the cutting technology, it is necessary to collect and prepare the cuttings: usually the seed strips are collected during the dormant period, and the 1-2-year-old branches can be selected in autumn, stored in the open sand, and the ears are cut in spring. For the parts that are slightly worse, ...

AI Technical Summary

Problems solved by technology

[0007] Cutting propagation is the main means of willow seedling breeding, but the existing cutting breeding mainly uses the trunk of willow seedlings or the branches of big trees as breeding materials, and is carried out in the field. Due to problems such as large morphological variation, uneven growth, and low rate of seedling emergence and nursery emergence, it is impossible to provide a large number of seedlings with uniform specifications and quality in a short period of time.