Cutting propagation method for needle-leaved tree

Abstract

The invention belongs to the technical field of vegetative propagation of plants and particularly relates to a cutting propagation method for needle-leaved trees. Preferentially, the needle-leaved trees are Torreya jackii Chun. The method particularly comprises steps as follows: (1) building of full-sunshine automatic spraying and cutting pool; (2) collecting and processing of cuttings; (3) cutting; (4) culture management after cutting; (5) management after transplanting. The method is simple and easy to implement, the propagation survival rate is high, the genetic change is small, management is convenient, large-scale propagation is facilitated, endangered plant, namely, Torreya jackii Chun can be effectively saved, and the survival environment of the species evolves to the north.

Description

technical field [0001] The invention belongs to the technical field of plant asexual propagation, and in particular relates to a cutting propagation method of coniferous trees. Background technique [0002] Coniferous tree Torreya longifolium ( Torreya Jackii Chan ), also known as Torreya chinensis and Torreya japonica, belonging to the genus Torreya yewaceae, is a relict gymnosperm plant remaining from the Cenozoic Tertiary period, a precious tree species unique to my country, and a wild plant under national second-level key protection. The taxonomy and flora's climatic response to the Quaternary Ice Age are of great significance. In addition, the long-leaved torreya is hard and fragrant, and can be used to make utensils. [0003] Long-leaved Torreya is an evergreen small tree or often a multi-branched shrub; branches are whorled or opposite, spreading or branchlets drooping; leaves are opposite, arranged in two rows, hard, linear-lanceolate, 3-13 cm long , 3-4 mm wide,...

AI Technical Summary

Problems solved by technology

[0006] In the prior art, there are very few researches on the cutting propagation of Torreya torreya, because Torreya torreya is extremely rare in the wild, and there is no more suitable one in the market. Torreya torreya seeds have a very long maturity period and poor natural regeneration ability, so they are stored in warm sand for winter Or direct sowing, the germination rate is only 0.5-1%. In addition, the long-leaved torreya grows slowly and has high requirements on the environment. Two long-leaved torreyas preserved by the Chinese Academy of Sciences in Jiangsu Province have passed more than 50 years. The tree height is 6 meters, the chest The neck is 13 cm, but there is no fruiting so far. The state of the art does not utilize the large-scale propagation of Torreya torreya. Therefore, research on the effective invisible propagation method of Torreya torreya can save the endangered plant Torreya torreya and make the survival background of this species move north

The cutting method disclosed in the prior art application number 2013101994490 has a low rooting rate and a long cutting propagation cycle. The inventor of the present application cooperated with the Chinese Academy of Sciences to improve on the basis of the existing technology and obtain excellent technical effects