Method for forcing germination epicormic branch cuttage of Catalpa bungei root segment

Abstract

The invention discloses a method for Catalpa bungei root segment germination accelerating shoot cutting, which is characterized in that, in the November of each year, root segment from Catalpa bungei is dug out; the coarseness of the root segment ranges from 0.5cm to 3.0cm; the clipping length ranges from 5cm to 20cm; from the middle and last ten days of January to the beginning of February, the root segment is put in the germination accelerating trench of a greenhouse for accelerating germination; when the bud seedling tillering from the Catalpa bungei root segment has three to five true leaves and achieves semi lignification, cutting treatment is performed. The method has the advantages that, shoot cutting are formed by the root segment with bud, so the survival rate is relatively high; the average survival rate is 93.2%; the shoot cutting are treated by fast dipping in the solution having the concentration of the mixture of ethyl acetic acid and acetic acid mixed according to the ratio of 1:2 for 500mg / L, and the rooting rate and the root number of the cuttings are greatly improved; the shoot cutting performed in the greenhouse with spraying condition has better effect; the mixture of cattle manure and saw dust mixed according to the proportion of 1:1 can be used as substrate; the cutting seedlings can be cut and transplanted in the same year; the average seedling height can achieve 170cm; the average ground diameter is 2.8cm; the rate of emergence and survival rate are high; the rapid propagation requirements to breed seedlings and produce strong seedlings in the same year are satisfied.

Description

technical field [0001] The invention relates to a technique for raising seedlings by cuttings, in particular to a method for accelerating germination of twigs from roots of Chinese catalpa. Background technique [0002] Catalpa bungei C.A. Meyer is a precious and high-quality timber tree species and a famous garden ornamental tree species, with a cultivation history of more than 2,000 years. Catalpa is a type of catalpa, which is naturally distributed in Shandong, Henan, Jiangsu, Anhui and other provinces. It is a deciduous broad-leaved tree species in the warm temperate zone of my country. Because of its good dry shape, fast growth speed, excellent material and special golden yellow color, And become the main type of current promotion. [0003] In recent years, the cultivation of Chinese catalpa has developed rapidly, and the supply of seedlings is in short supply. But because of its self-flowering is not fruitful or rarely fruitful, two methods of root burying and graftin...

AI Technical Summary

Problems solved by technology

[0005] The emergence rate and survival rate are both low, and the seedlings are uneven, and the lack of seedlings and ridges are serious

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