Method for culturing seedlings of taxodium distichum*T.Mucronatum'zhongshanshan' by cutting at low cost and at high outplanting rate

Abstract

The invention relates to the technical field of asexual reproduction of plants and particularly discloses a method for raising seedlings of taxodium distichum*T.Mucronatum'zhongshanshan' by cutting ata low cost and at a high outplanting rate. The seedling culturing method comprises steps as follows: S1, preparation of nursery land; S2, preparation of cuttings; S3, cottage; S4, management of the rooting phase of cutting seedlings; S5, management after rooting of the cutting seedlings; in preparation of nursery land in S1, the cutting medium of the nursery land is yellow soil drawn on local resources, that is, a layer of about 5 cm thick yellow soil is paved on a seed bed which has been sterilized, disinfected and disinfested. The method has the remarkable benefits as follows: 1) the cutting medium is obtained conveniently: local fresh yellow soil is adopted as the cutting medium; 2) facilities and equipment are simple, all that is required is to establish simple shading and irrigationfacilities; 3) the cost is saved, the input and maintenance cost of full-automatic irrigation equipment is reduced, the seedling culturing cost is reduced by 50% or above; 4) the outplanting rate is increased, cut rooting seedlings can be remained in a nursery and continuously cultivated for one year, damage of the seedling transplanted out of the nursery is reduced, and the outplanting rate is increased by 10% or above.

Description

technical field [0001] The invention belongs to the technical field of plant vegetative propagation, and in particular relates to a method for raising seedlings by cutting Zhongshan fir in a field with low cost and high emergence rate. Background technique [0002] Zhongshan fir (Taxodium distichum×T.Mucronatum'zhongshanshan') is a tall deciduous tree belonging to the genus Taxodium distichum × T.Mucronatum. A general term for a series of fine new varieties bred by interspecific hybridization. Because it was bred by Zhongshan Botanical Garden, it was named "Zhongshan Shanshan". At present, there are more than 10 Zhongshan fir strains commonly used in production, including Zhongshan fir 302, 118, 405, 406, and 407. After cross breeding, Zhongshan Shanyin has the advantages of the two tree species of bald cypress and Mexican bald cypress. Compared with its parents, it has fast growth, long green leaf period, beautiful tree shape, water and humidity resistance, salt and alkali...

AI Technical Summary

Problems solved by technology

[0004] However, there are few studies on how to reduce the cost of seedlings, shorten the cycle of seedlings, and improve the rate of seedling emergence in nursery nurseries for the large-scale seedling cultivation of Zhongshan fir.

At present, the price of bare root seedlings cut by Zhongshan fir in the market is about 1.5 yuan / plant, while the price of container seedlings cut in that year is more than 2 yuan / plant. This high-cost seedling price has seriously restricted the Zhongshan fir seedling industry. development of