Catalpa bungei rapid cuttage propagation method

Abstract

The invention relates to the technical field of vegetative propagation and cultivation of seedlings, and particularly relates to a catalpa bungei rapid cuttage propagation method. The method comprisesthe following steps that annual robust seed branches of catalpa bungei variety and clone are selected to be disinfected and then placed in a pregermination pond to grow cutting slips, coppice shootsare obtained after 5-7 weeks, and disinfection is conducted after the cutting slips obtained is pruned; peat and perlite of 2:1 are selected as cutting medium materials, the peat and perlite are inserted into a point disk, 1L of talcum powder are mixed with ABT No.1 500*(10-6)mg / L and GGR No.7 (80*10)-6mg / L to prepare rooting powder, the base portions of the cutting slips are evenly dipped into the rooting powder and put into the holes formed in the point disk, and the cutting slips are poured over with clean water and sprayed with bactericide after fixed; atomization management is performed within 1-10 days after cuttage, the atomization management is stopped after 10 days, illumination is increased, ventilation is conducted, bactericide is sprayed at regular intervals, and foliar fertilizers are sprayed at regular intervals after 3 weeks of the cuttage to obtain cuttage seedlings; 5 weeks after the cuttage, full illumination is supplied, temperature is controlled, regular watering isperformed, fertilizers are applied, and hardening-seedling is conducted; 7-8 weeks after the cuttage, the cuttage seedings are transplanted, sufficient water is poured over on the cuttage seedlings,and then managements such as watering, fertilization and the like are performed. The method has the advantages of high rooting rate, good universality and low cost.

Description

technical field [0001] The invention relates to the technical field of vegetative propagation and seedling raising, in particular to a method for rapid cutting propagation of catalpa trees. Background technique [0002] Catalpa bungei C.A.Mey is a tall deciduous tree of Catalpa Scop. in the Bigoniaceae family. It has a wide distribution and integrates high-quality timber, ecological protection, precious garden ornamental, atmospheric environment improvement and medicinal health care. It is a unique precious wood 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 (Guo Congjian et al., 1988). Since the "Sixth Five-Year Plan", Chinese scholars have started systematic research on Catalpa species. So far, more than 20 traditional local varieties or excellent types have been used (Pan Qingkai et al., 1991), and more than 50 related new varieties, improved varieties, and excellent hybrids have b...

AI Technical Summary

Problems solved by technology

Solve the technical problems in the prior art such as many varieties of catalpa, low rooting rate, difficulty in propagation of clonal twig cuttings, poor technical repeatability and versatility, cumbersome operation, and high cost

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