Phoebe bournei overhead layer seedling growing method

Abstract

The invention discloses a Phoebe bournei overhead layer seedling growing method. The Phoebe bournei overhead layer seedling growing method comprises the steps of selecting seed trees, selecting branches, causing injuries, performing root promoting treatment, performing overhead layer treatment, performing transplanting, performing transplanting management and the like. The seedling growing methodhas the effects that 1, the rooting efficiency is high and is 44%; 2, little management is needed, no management is needed in the layer period, after transplanting, a root system is supplied, only watering and shading are needed, and the management period just needs one year; 3, the root system is developed, wherein three months after layering is performed, the maximum rooting number is 29, the largest root length is 12.2 cm, and the largest root thickness is 4.85 mm; 4, the transplanting survival rate is high, and the layer transplanting survival rate reaches up to 85%; 5, nursery stock outplanting is rapid, wherein after layers grow one year in a nursery garden, the length is 51+ / -3 cm, and the standard for primary seedlings and secondary seedlings specified by the national forestry industrial standard 'Phoebe bournei cultivation technical regulations' is reached.

Description

technical field [0001] The invention belongs to the technical field of plant breeding, and in particular relates to a method for raising seedlings of Phoebe nannies by layering at high altitude. Background technique [0002] Phoebe bournei (Phoebe bournei) is a large evergreen tree of the genus Phoebe in the Lauraceae family. It is a precious local timber and ornamental tree species widely cultivated in subtropical regions of my country. The wood has fine texture, is not easy to warp, has strong corrosion resistance, and is easy to process. It is an excellent natural and environmentally friendly material for making furniture, plaques, and decorating houses. Its tall trees are majestic and tall, with beautiful crowns and long life. [0003] Vegetative propagation refers to the method of breeding seedlings by using plant vegetative organs. It is the main method of cultivating excellent tree ramets in forestry, the key link in the construction of tree clone seed gardens, and an ...

AI Technical Summary

Problems solved by technology

To sum up, although this technology uses big tree shoots as explants, the technology of tissue culture propagation and seedling cultivation is not complete and continuous, the equipment required for tissue culture is complicated, the aseptic requirements of the tissue culture process are high, the preparation of medium is complicated, and the work is difficult. The amount is large, and the cultivation process needs to provide artificial light, which is costly

[0006] To sum up, at present, the vegetative propagation of Minnan is mainly based on cutting seedlings, but it is suitable for the stems of seedlings, and the rooting rate of the current-year branches of trees over 5 years old is low, and the entire seedling raising process is incomplete.

Although group-cultivated seedlings can be grown from large trees as explants, the whole process seems complete, but the time of each link and the overall reproduction coefficient are unclear. The cultivation process requires more equipment, stricter sterility requirements, hardening and transplanting. The growth after planting is unknown, so it is still incomplete and continuous

All in all, the existing two kinds of vegetative propagation and seedling raising techniques of Phoebe oleifera cutting seedlings and group seedling cultivation are still incomplete, and it is difficult to meet the requirements of the ramet cultivation of excellent trees of Phoebe oleifera in the early stage, the construction of clone seed gardens and the cultivation of new varieties.