Method for winter seeding and seedling cultivation forestation of phoebe sheareri

Abstract

The invention discloses a method for winter seeding and seedling cultivation forestation of phoebe sheareri. According to the method, seed coats are abraded to break by coarse sand to break seed dormancy; then, winter germination accelerating and seeding can be performed, and the germination rate reaches 90% or above. Compared with sand storage for spring seeding, the method has advantages that seedling cultivation time is shortened sharply, seed mildewing loss is reduced, and the germination rate is increased. In a breeding process, phoebe sheareri seedlings are prone to sun scalding, apicalbuds grow slowly after being damaged, lateral branches are in a large quantity, and difficulty in timber formation is caused by direct forestation. Therefore, acer palmatum, prunus cerasifera and thelike are planted on two sides of a nursery to realize natural shading for preventing sun scalding, cultivated seedlings are uniform in growth, lateral branches are few and short, trunks are upright, and accordingly forestation seedling quality is guaranteed, and the timber formation performance and the ornamental value of phoebe sheareri are increased remarkably. By mixed forestation of phoebe sheareri which belongs to aiphyllium with various deciduous species, interspecific advantageous complementation is realized, and species richness, diversity and stability of woodland can be improved. Themethod provides technical support for artificial breeding and seedling cultivation forestation of valuable phoebe sheareri timber forests.

Description

technical field [0001] The invention belongs to the technical field of tree cultivation, and in particular relates to a method for sowing and growing seedlings of Zinan in winter for afforestation. Background technique [0002] Purple Nan ( Phoebe sheareri (Hemsl.) Gamble) belongs to Lauraceae ( Lauraceae ) Phoebe ( Phoebe ), is a unique subtropical evergreen broad-leaved tree species in my country, and is a national second-level key protected wild plant. It is generally distributed in mountainous broad-leaved forests at an altitude of 500m to 1000m. The height of Zinan tree can reach 30m, and the diameter at breast height is 40-50cm. Bark light grayish brown, buds, young leaves, young branches, and inflorescences densely covered with yellowish brown hairs. Its leaves are alternate, obovate or obovate-lanceolate, 10.0-23.5cm long, 3.5-8.0cm wide; petioles are covered with yellow-brown hairs, 1.5-2.5cm long. Panicle, about 7cm long; bracts oblong, 1.5mm long; flowers ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems such as the low germination rate of Zinan artificial seedlings, the failure of seedling cultivation in the early stage to meet the requirements of afforestation, and how to use Zinan for afforestation, the present invention adopts winter germination sowing (accompanied with harvesting and sowing) to improve the germination rate; The process is easy to be sunburned and the top is easily injured, which affects the growth of the main trunk and makes it difficult for the seedlings to meet the requirements of afforestation. Use the natural shade of small trees to shape the obvious trunk, cultivate qualified afforestation seedlings, and then mix with various deciduous tree species for afforestation to solve the problem of purple Nan seedlings. afforestation problem

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