Seedling-raising method using poplar root sucker and container hardwood cutting together

Abstract

The invention discloses a seedling-raising method using a poplar root sucker and a container hardwood cutting together, comprising the following steps of: (1) raising seedlings by the container hardwood cutting through directly adopting the hardwoods of annual nursery stocks to obtain container seedlings if the breeds of poplars to be propagated are annual nursery stocks; and excavating the root systems of the adult trees of the poplars and shearing the root systems to cuttings for the seedling raising of container root cutting to obtain the container seedlings if the breeds of the poplars to be propagated are adult trees; (2) transplanting the obtained container seedlings in nursery land for nursery stock breeding; (3) after leaves fall in the same year or seedlings are lifted in spring of the ensuing year, carrying away qualified seedlings for forestation and translating the seedling-lifted nursery land into root sucker seedling-raising nursery land; and (4) carrying out the container hardwood cutting seedling raising by using the substandard seedlings bred by the root sucker. The seedling-raising method has the advantages of simple technical link, low seedling-raising cost, high cutting survival rate and no influences on the position effect and the maturation effect of scion grafting, can ensure the sustainable seedling-raising utilization of the large-scale high-efficiency vegetative propagation and fine vegetative propagation materials of the fine breeds of the poplars.

Description

technical field

[0001] The invention relates to a method for raising seedlings of poplar by asexual propagation, in particular to a method for raising seedlings of poplar root tiller and container hard branch cuttings, and belongs to the field of poplar seedling raising. Background technique

[0002] Difficulties in cutting propagation of poplar species of the genus Populus are recognized worldwide, especially in large-scale seedling cultivation. When propagating poplar species such as European aspen in foreign countries, tissue culture and twig cuttings are mainly used, which require high conditions and high costs. From the 1950s to the 1970s, my country mainly used methods such as burying seedlings, grafting seedlings, and root tiller seedlings to propagate poplar species such as Populus tomentosa. In the early 1980s, techniques such as tissue culture, twig cuttings, and hard branch cuttings were used to propagate Populus tomentosa, Populus Hebei (Edited by Xu Weiying. Pop...

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