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Construction and management method for small tree body seed orchard of picea tree species

A management method and technology of the spruce genus, applied in the field of plant grafting and propagation, can solve the problems of long juvenile period, danger, and tall tree.

Inactive Publication Date: 2015-05-13
INST OF FORESTRY CHINESE ACAD OF FORESTRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spruce (Picea) tree species is tall and the cones are located in the middle and upper part of the tree crown. It is difficult to operate crossbreeding and harvest cones, which is quite dangerous.
In order to shorten the long juvenile period (childhood) of Picea species at home and abroad, measures such as pruning, girdling, and hormone treatment have been taken, but they have not achieved ideal results.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) From November 3rd to 10th, 2006, at the Dabiangou Forest Farm in Qingyuan, Liaoning, collected selected branches of European spruce trees with excellent growth and firmness properties, and stored them at 0°C in Xiaolongshan Forestry Research Institute Overwinter in the wet sand of the following low-temperature cellars;

[0051] (2) On February 27, 2007, the European spruce branches in the low-temperature cellar were moved to the ordinary cellar of the larch / spruce seed base in Shaba, and the wet sand was stored for 6-7 days before grafting;

[0052] (3) From March 2nd to March 20th, 2007, at the Shaba Larch / Spruce Seed Base, the seedling age was 8-10 years old, and the height was 50-70cm, and the robust local Qinghai spruce (Picea crassifolia) was used as the rootstock. The method of sticking the xylem cambium is used for grafting; while the grafted seedlings are undergoing conventional fertilization, watering, and weeding management, they are also managed with prun...

Embodiment 2

[0060] (1) From November 3rd to November 12th, 2006, the branches of black spruce trees selected through breeding procedures were collected in Dabiangou Seed Garden, Qingyuan, Liaoning; In the sand, check and water frequently, and the relative humidity is 70-80%;

[0061] (2) On February 27, 2007, it was moved into the ordinary cellar of the larch / spruce seed base in Shaba. The branches were kept in wet sand in the ordinary cellar and watered frequently.

[0062] (3) From March 6th to March 26th, 2007, Qinghai spruce with a seedling age of 8-10 years and a height of 50-70 cm was selected as the rootstock in the larch / spruce seed base in Shaba;

[0063] (3) adopt the method that xylem cambium sticking is carried out grafting, take the management such as pruning, twisting branch, pulling branch after grafting, carry out routine fertilization, irrigation, weeding management, be careful artificial damage scion when fertilizing, weeding;

[0064] (4) In 2008, the grafted seedlings...

Embodiment 3

[0066] (1) From November 3rd to November 12th, 2006, at the Dabiangou Forest Farm in Qingyuan, Liaoning, the branches of white spruce trees selected through the breeding program were collected; the wet sand preserved in the low-temperature cellar at the Xiaolongshan Forestry Research Institute During the process, the air humidity should be kept at 70-80%. It is necessary to regularly check and sprinkle water in time to prevent water loss and affect the survival rate of grafting;

[0067] (2) On February 27, 2007, the white spruce branches were moved to the ordinary cellar of the larch / spruce seed base in Shaba, kept in wet sand, sprinkled with water frequently, and kept the air humidity at 70-80%;

[0068] (3) From March 12 to April 6, 2007, select Qinghai spruce with a seedling age of 8-10 years and a height of 50-70 cm as the rootstock;

[0069] (4) Adopt the method that xylem cambium sticking is carried out grafting, take the management such as pruning, twisting branch, pul...

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Abstract

The invention provides a construction and management method for a small tree body seed orchard of a picea tree species. The method comprises the steps that after picea sap stops flowing, branches are collected on the periphery of the middle-upper portion of a tree crown of a selected and fruited picea superior tree, and the branches are preserved in sand and placed in a cellar at low temperature to spend the winter; in the spring, before the sap starts flowing and buds germinates, healthily-growing local Qinghai picea seedlings with 8-10 years old and seedling height ranging from 50 cm to 70 cm are selected as stocks, grafting is carried out using a attachment connection method between a xylem and a cambium, and binding bands are removed after 60-70 days of the grafting; in the second year, the grafting survival nursery stocks are arranged according to variety and clone in sequence and planted in nursery lands with fertile soil, and the nursery stocks start fruiting after 3-4 years of planting. When the tree height reaches more than 3.0 m, top pruning is carried out. According to the picea seed orchard constructed using the grafting method, the juvenile phase is shortened by at least 17 years, the improved variety process of the picea is accelerated, the difficulty and the danger of hybridization operation and cone picking are reduced, and the time and work are saved.

Description

technical field [0001] The invention relates to plant grafting and propagation, which shortens the juvenile period, shortens the breeding cycle, accelerates the process of improving varieties, and the construction technology of small tree seed gardens. Background technique [0002] Spruce (Picea) tree species have a long juvenile period (childhood), and it generally takes at least 20 years from construction to fruiting of the seed garden, or even 30-40 years before fruiting, or even longer; the progress of improved species is slow. The spruce (Picea) species has a tall tree body, and the cones are located in the middle and upper part of the canopy. It is difficult to operate crossbreeding, and it is difficult to harvest the cones, which is quite dangerous. In order to shorten the long juvenile period (childhood) of Picea species at home and abroad, measures such as pruning, girdling, and hormone treatment have been taken, but all have not achieved ideal results. Contents o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00
CPCA01G2/30A01G17/005
Inventor 王军辉马建伟胡勐鸿贾子瑞
Owner INST OF FORESTRY CHINESE ACAD OF FORESTRY
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