Three-stage matched cutting cultivation method for catalpa bungei

Abstract

The invention relates to a three-stage matched cutting cultivation method for catalpa bungei and relates to an asexual breeding technical mode in forestry science. The method comprises the following steps of (1) establishing a first-stage rapid breeding system, collecting branches which grow out in the current year for sand storage at the end of February, adopting small seedlings of catalpa treesas stocks after germination, and carrying out bud grafting on base parts with xylem to obtain grafted seedlings; (2) establishing a second-stage rapid breeding system, constructing a temporary cuttingorchard, planting the grafted seedlings obtained in step (1), and adopting a burying stem germination acceleration cuttage mode disclosed in the publication number CN107996166A or adopting a full-illumination mist spray cuttage mode or adopting a hard branch cuttage mode to obtain cutting seedlings; (3) establishing a third-stage rapid breeding system, planting the cutting seedlings obtained in step (2), establishing a cutting orchard of own-rooted trees, and repeating the cuttage modes in step (2) or adopting root sections for cuttage, wherein the harvesting deadline of the cutting orchard of the own-rooted trees is 5 years, rejuvenation is required five years later for harvesting for another 4 years, and steps (1), (2) and (3) are repeated after 4-year rejuvenation. According to the method, a three-stage rapid breeding system is established, so that the breeding coefficient is greatly increased, and the cuttage survival rate and transplanting survival rate of catalpa bungee are increased.

Description

technical field [0001] The invention relates to the technical field of asexual reproduction in forestry science, in particular to a three-stage supporting cutting cultivation method of catalpa. Background technique [0002] Catalpa bungei C.A.Mey is a tall deciduous tree of Bignoniaceae (Catalpa Scop.), which has a wide distribution range and integrates high-quality materials, ecological protection, precious garden ornamental, atmospheric environment improvement and medicinal health care. It is a unique precious timber tree species and ornamental tree species in my country. It is known as the "King of Wood" and has a cultivation history of more than 2,100 years. Since the "Sixth Five-Year Plan", Chinese scholars have begun systematic research on Catalpa genus. Up to now, more than 20 traditional local varieties or excellent types have been used nationwide, more than 50 related new varieties and improved varieties have been bred, and hundreds of excellent hybrid clones have be...

AI Technical Summary

Problems solved by technology

[0009] The invention provides a three-stage supporting cutting cultivation method of catalpa, which solves the problems in the prior art, such as low propagation coefficient of cutting breeding, limited by seasonality, insufficient utilization of cutting materials, lack of integrated mode of breeding and cultivation technology, etc.

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