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Construction method of castanopsis hystrix rejuvenation cutting orchard and application thereof

A technology of ear picking nursery and red cone, applied in the field of forest tree breeding, can solve the problems of high-quality traits of difficult varieties, large seed differentiation, etc., and achieve the effects of strong physiological function, rapid growth, and strong new shoots

Active Publication Date: 2021-01-15
GUANGDONG ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The ear-picking nursery is one of the important ways for the multiplication of improved varieties of forest trees. However, most of the existing red cone-picking nurseries use the seedlings as the mother plants. Due to the large differentiation between seeds, it is difficult to maximize the high-quality traits of improved varieties.

Method used

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  • Construction method of castanopsis hystrix rejuvenation cutting orchard and application thereof
  • Construction method of castanopsis hystrix rejuvenation cutting orchard and application thereof
  • Construction method of castanopsis hystrix rejuvenation cutting orchard and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063]Example 1: The construction of the nursery for the harvesting of A. sylvestris

[0064]A method for constructing the seed harvesting nursery of A. sylvestris includes the following steps:

[0065](1) Selection of the picking nursery location

[0066]The picking nursery was established at the Houshan base of the Guangdong Academy of Forestry Sciences, with flat terrain, good lighting conditions, adequate water sources, good ventilation and drainage, and deep, loose and fertile soil.

[0067](2) Layout of the ear-picking nursery and site preparation

[0068]Deep turn and level the nursery, install drip irrigation system between every two rows; dig a planting hole at a distance of 3m×3m, with a size of 80cm×80cm×60cm, and pile the topsoil on both sides of the hole for easy return. Put the topsoil back into the hole; mix the yellow heart soil, peat soil, and pond mud at a mass ratio of 40%:30%:30% to obtain nutrient soil; use calcium-magnesium phosphate fertilizer with a dosage of 0.5kg / hole, an...

Embodiment 2

[0078]Example 2: Comparison of the effect of truncated and non-truncated cases

[0079]This embodiment is basically the same as embodiment 1, but the difference is that in step (5), this embodiment treats the top of the cloned seedlings differently; the specific operations are as follows:

[0080]Select 10 clones of Castanopsis hystrix (numbered respectively: 2, 3, 5, 16, 21, 22, 26, 27, 29, 30), and take 3 clones of grafted seedlings for T1 truncation and T2 respectively In two treatments without truncation, the number and growth of young buds were recorded after 1 month. The indicators used included the total number of buds, the average number of buds, the maximum number of buds per plant, and the distribution range of bud numbers.

[0081]The results are shown in Table 1 below:

[0082]Table 1: The effect of truncation on budding

[0083]

[0084]It was found that the treatment of truncated shoots and shoots for the same clone resulted in early germination, a large number of young buds, and a tall...

Embodiment 3

[0085]Example 3: Comparative case effects of leather splicing, split splicing and cut splicing

[0086]This embodiment is basically the same as embodiment 1, except that in step (4), the grafting method of the rootstock and the scion and the rootstock diameter are different; the specific operations are as follows:

[0087]Three methods: A1 skin connection, A2 split connection, and A3 cut connection, rootstock diameter B1 (0.8cm), B2 (1.0cm), B3 (1.5cm), B4 (2.0cm), 4 thicknesses, each Treat 20 strains and repeat 3 times. The specific treatment methods and the survival rate of grafted seedlings are shown in Table 2 below andFigure 7 Shown.

[0088]Table 2: Influence of different grafting methods on survival rate

[0089]

[0090]The results show that there are significant differences between different treatments. The skin grafting method is used to graft red cones and rootstocks with a ground diameter of 1.0 to 1.5 cm are the best. The grafting survival rate can reach more than 90%, of which rootst...

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Abstract

The invention discloses a construction method of a castanopsis hystrix rejuvenation cutting orchard and application thereof. According to the method, castanopsis hystrix seed bag seedlings serve as rootstocks, a selected excellent family serves as a scion source, rejuvenation of scions is kept through the technologies of bark grafting, high-strength top cutting, branch bending, subcutaneous rooting and the like, rapid propagation expanding can be achieved, the excellent clonal cutting orchard can be constructed, and a large number of high-quality scions can be provided, and are used for production and application in the aspects of subsequent cuttage, grafting, in-vitro culture and the like. According to the method, high-juvenile-state explants are provided for clonal propagation manners such as cuttage and tissue culture, and the survival rate is high; the current situations of developed main roots, few fibrous roots and low afforestation survival rate of seedlings at present are solved; and meanwhile, the current situation that the castanopsis hystrix fructification productivity and less production phenomenon exists and less-production seeds difficultly meet the requirements can also be quickly solved.

Description

Technical field[0001]The invention belongs to the technical field of forest tree seed breeding, and particularly relates to a method for constructing a seedling nursery for the juvenile of A. tricolor and its application.Background technique[0002]Castanopsis hystrix (Castanopsis hystrix A.DC), also known as Hongli, Chili, Lebanon, Castanopsis, Castanopsis, Castanopsis, Hongke, belongs to the evergreen tree of the genus Castanopsis, straight tree, tall tree It can reach up to 30 meters and a diameter at breast height of more than 1 meter. It is the dominant tree species in the evergreen broad-leaved forests of southern subtropical and subtropical vegetation in my country. It is an important native broad-leaved precious timber and efficient multi-purpose ecological public welfare forest tree species in South China. Red cones are naturally distributed in 95°20′~118°0′ east longitude and 18°30′~25°0′ north latitude. The main producing areas are concentrated in Guangdong, Guangxi, southe...

Claims

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Application Information

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IPC IPC(8): A01G2/30A01G17/00A01C23/04A01G24/28A01H4/00
CPCA01C23/04A01G17/005A01H4/00A01H4/008A01G2/30A01G24/28Y02P60/40Y02A40/22
Inventor 张卫华王裕霞潘文徐放杨会肖廖焕琴
Owner GUANGDONG ACAD OF FORESTRY
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