Method of growing seedlings of Chimonanthus praecox by layering

Abstract

The invention provides a method of growing seedlings of Chimonanthus praecox by layering. The method comprises selecting a triennial Chimonanthus praecox tree as a mother tree, and carrying out layering when root shoots grow to 0.4-0.6 cm in thickness and greater than 50 cm in length; before layering, carrying bud notching 0.2-0.4 cm away from the bottom of each bud at intervals of 14-16 cm; laying the shoots at the above convenience, and compressing and burying the shoots tightly with soil; after rooting occurs in September, dividing plants, and transplanting. The method provided herein is simple to perform, has few time limits and provides high survival rate.

Description

technical field [0001] The invention relates to the field of tree seedling cultivation, in particular to a method for raising wintersweet seedlings by layering. Background technique [0002] For the propagation of wintersweet trees, the common ones are grafting, branching and aerial layering. For division propagation, a mother tree can only be divided into 2-3 daughter plants, which takes two to three years to complete. The reproduction cycle is long, the operation is labor-intensive, the reproduction efficiency is low, and the reproduction coefficient is low; grafting reproduction is the main reproduction in current production. The method is mainly branch grafting in March in spring, and the reproduction coefficient and survival rate are relatively high. However, due to the serious germination of wax plums, after the grafted seedlings are planted, if the germination is not timely enough, it is very easy to cause the branches of the grafted part to grow in a few years. The ...

AI Technical Summary

Problems solved by technology

For division propagation, a mother tree can only be divided into 2-3 daughter plants, which takes two to three years to complete. The reproduction cycle is long, the operation is labor-intensive, the reproduction efficiency is low, and the reproduction coefficient is low; grafting reproduction is the main reproduction in current production. The method is mainly branch grafting in March in spring, and the reproduction coefficient and survival rate are relatively high. However, due to the serious germination of wax plums, after the grafted seedlings are planted, if the germination is not timely enough, it is very easy to cause the branches of the grafted part to grow in a few years. The grafted seedlings dry up and die, and the grafted seedlings become rootstock seedlings again; the aerial layering is performed on the adult and strong wintersweet mother plant, and the 30-50 cm long part of the branch is "ring-peeled", and the chaff soaked in water is pasted. The upper and lower ends are tied with plastic tape. After 2-3 months, after the beading takes root, the mother plant can be cut off at the lower end of the plastic bag. However, the nutrient supply of the branches above the air beading can only maintain About two months, at this time, if the new roots below the girdling mouth have not grown, the upper branches will die, resulting in a low survival rate

[0003] In the prior art, other tree species such as: walnut and Pingou hybrid hazel use layering to raise seedlings; but what walnut uses is branch layering, which needs to carry out a series of operations such as yellowing of branches, which is more complicated; wax plum branches are relatively brittle and are not suitable for direct cultivation. Layering; Pingou hybrid hazel uses sprouting layering, but the layering needs to be carried out in the air, and a special layering device is required, which is time-consuming and labor-intensive