Breeding method for salt-tolerant fast-growing seedlings of salix matsudana

Abstract

The invention discloses a breeding method for salt-tolerant fast-growing seedlings of salix matsudana. The breeding method comprises the steps: 1) bamboo willow stock cutting and field planting, namely carrying out cutting propagation of bamboo willows on moderate saline and alkaline soil with the total salt content being 0.3%-0.5%, and then, carrying out transplanting and field planting; 2) salixmatsudana scion preparation, namely shearing annual branches with the diameters being 0.4cm-0.6cm before salix matsudana branches are germinated, and carrying out stratification for later use; 3) wedge grafting and main shoot changing, namely before sap starts to flow and a tree shoot is germinated at the end of March and at the beginning of April, selecting a bamboo willow with a straight trunkand the breast height diameter reaching 1.5cm-2.5cm, cutting the trunk at a high place, carrying out longitudinal chopping once on the center of the stock by using a chopper, keeping the depth of a chopping opening at 3cm-4cm, selecting standby robust salix matsudana branches without diseases, and cutting the salix matsudana branches to form 6cm-8cm wedged scions; strutting the chopping opening ofthe stock by using a grafting knife, and slightly inserting two scions to two sides inside the stock to make a stock forming layer aligned to a scion forming layer; and 4) management after grafting.By using the breeding method, the bred commercial seedling rate of the salix matsudana can be increased, and the nursery leaving time of commercial seedlings of the salix matsudana can be shortened.

Description

technical field [0001] The invention relates to a method for breeding salt-tolerant fast-growing seedlings of Salix japonica, belonging to the technical field of garden plants. Background technique [0002] Salix matsudana f.tortuosa is Salix matsudana f.tortuosa, a deciduous shrub or small tree of the Salix family Salix genus. It is a variety of Salix matsudana. It can reach 3m in height. %, the comprehensive ability of salt tolerance is strong, but the root system of willow willow is weak, and the growth of cuttings is slow. [0003] Known green bamboo willow grafting willow willow propagating technology adopts high-quality green bamboo willow as rootstock, and grafting and breeding grows faster and has better cold resistance willow. However, the green bamboo willow is a new variety of willow cultivated by the Heilongjiang Academy of Forestry and Environmental Sciences. The applied variety has not yet been sold publicly, so it is not easy to obtain and the cost of plantin...

AI Technical Summary

Problems solved by technology

However, the green bamboo willow is a new variety of willow cultivated by the Heilongjiang Academy of Forestry and Environmental Sciences. The applied variety has not yet been sold publicly, so it is not easy to obtain and the cost of planting is high.

Images