A kind of preservation method of catalpa grafted seedlings after the beginning of autumn

Abstract

The invention relates to a method for preserving catalpa bungei grafted seedlings after beginning of autumn. The method comprises the following steps: grafting catalpa bungei by taking catalpa as a rootstock, soaking 6-benayl aminopurine during grafting, and spraying growth regulation liquid; smearing a Bordeaux mixture on a full stand after grafting, preserving in a dark wet environment, and restraining the growth of the catalpa bungei grafted seedlings by abscisic acid, ethephon, potassium sodium tartrate and complex amino acid flour. The method is easy to operate; by adopting the method, the defect that grafting cannot be performed in winter is overcome, and the grafting time is prolonged; meanwhile, the time for transplanting the catalpa in spring is put forward, the early-spring transplanting growth period is put forward, and the annual height of the rootstock is over 3 meters; the method has the advantages of quick return of rooted seedling planting, longer growth period, high seedling growing speed, high dryness, attractive tree form and high rootstock quality.

Description

technical field [0001] The invention belongs to the technical field of agriculture and relates to a method for preserving grafted catalpa seedlings after the beginning of autumn. Background technique [0002] Catalpa belongs to Bignoniaceae catalpa, is a national reserve forest tree species, with wide distribution, good wood quality, beautiful tree shape, large leaves, and great ornamental value in flowering period. Catalpa is known as "both material and appearance". One of the precious native tree species. Shandong Provincial Academy of Forestry and Luoyang Forestry Institute have used artificial hybridization technology and multi-level breeding technology based on ecological concepts to breed new varieties with characteristics that expand their uses, such as the fast-growing catalpa tree "Rosalpa 1" and "Rosalpa 2". ", timber species "1-4", ornamental tree species "Zhaoxia", etc., the market utilization rate has increased, but the reproductive coefficient of fine varietie...

AI Technical Summary

Problems solved by technology

Shandong Provincial Academy of Forestry and Luoyang Forestry Institute have used artificial hybridization technology and multi-level breeding technology based on ecological concepts to breed new varieties with characteristics that expand their uses, such as the fast-growing catalpa tree "Rosalpa 1" and "Rosalpa 2". ", timber tree species "1-4", ornamental tree species "Zhaoxia", etc., the market utilization rate has increased, but the reproductive coefficient of fine varieties is low, and the gap is large

[0003] After years of research, it has been found that the fast-growing catalpa grows fast and has a long growth period. The seedlings grafted after the beginning of autumn have a low degree of lignification in that year. , it could not be lignified that year, and after the cold winter, the preservation rate of scions was almost zero

The method of cultivating soil in situ after grafting can also preserve the survival of the scion, but the amount of work is large, and the temperature is not easy to control. If the temperature is high, the scion will germinate, and the cold resistance will decrease after germination.