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A method for increasing the survival rate of Eucalyptus grandis grafting

A large inflorescence eucalyptus, survival rate technology, applied in grafting, cultivation, agriculture, etc., can solve the problems of hindering the construction of seed orchards and low grafting survival rate, so as to improve the grafting survival rate, high grafting survival rate, and thick spikes Effect

Active Publication Date: 2021-06-01
GUANGXI FORESTRY RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The provenance / family test forest of Eucalyptus grandis has been selected, the branches of excellent trees are collected for grafting, and a clone seed garden is established, but the survival rate of grafting is low, only about 10.0%, which seriously hinders the construction process of the seed garden
Therefore, it is of great significance to explore new grafting methods to solve the problem of low survival rate of grafting

Method used

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  • A method for increasing the survival rate of Eucalyptus grandis grafting

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The method for improving the survival rate of Eucalyptus grandis grafting,

[0025] Collect the branches of Eucalyptus eucalyptus from the wild to graft, select the well-healed grafted seedlings to move into a diameter of 40cm, and cultivate a non-woven bag with a height of 30cm. When the mother plant grows to a height of 1m, carry out truncation, pruning off small branches, weak branches, Side branches, only keep the first-order branches, and the cultivation period is 6 months to obtain strong spikes with a diameter greater than 0.3cm at 2 / 3 of the branch length.

[0026] In March, 6 days before grafting, select branches with full axillary buds, no damage by diseases and insect pests, and grow vigorously, cut off the terminal bud part at a diameter of about 0.3 cm, and promote the germination of the axillary buds of the retained branches.

[0027] On day 7 after pretreatment,

[0028] Select 2 axillary buds that are slightly protruding and about to germinate as a scio...

Embodiment 2

[0030] Collect large inflorescence Eucalyptus branches from the wild for grafting, select well-healed grafted seedlings and move them into non-woven bags with a diameter of 40 cm and a height of 30 cm for cultivation. , side branches, only keep the primary branch, and the cultivation period is 8 months to obtain a robust spike with a diameter greater than 0.35cm at 2 / 3 of the branch length.

[0031] In March, 6 days before grafting, select branches with full axillary buds, no damage by diseases and insect pests, and grow vigorously, cut off the terminal bud part at a diameter of about 0.3 cm, and promote the germination of the axillary buds of the retained branches.

[0032] On the 7th day after the pretreatment, select 2 axillary buds that are slightly raised and about to germinate as a scion, and graft, and the scion is grafted with picking.

Embodiment 3

[0034] Collect large inflorescence Eucalyptus branches from the wild for grafting, select well-healed grafted seedlings and move them into non-woven bags with a diameter of 40 cm and a height of 30 cm for cultivation. , side branches, only keep first-class branches, and the cultivation period is 10 months to obtain robust spikes with a diameter greater than 0.38cm at 2 / 3 of the branch length.

[0035] In March, 5 days before grafting, select a branch with full axillary buds, no damage by diseases and insect pests, and grow vigorously, and cut off the terminal bud part at a diameter of about 0.3 cm to promote the germination of the axillary buds of the retained branches.

[0036] On the 6th day after the pretreatment, select 2 axillary buds that are slightly raised and about to germinate as a spike, and graft, and the spike is grafted with picking.

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Abstract

The invention discloses a method for improving the grafting survival rate of Eucalyptus grandiflora. The invention adopts (1) cultivating a mother plant for picking ears, (2) cultivating strong spikes; (3) pretreatment of spikes; (4) clipping Scion grafting and other steps, especially through cutting and removing the terminal buds at the 0.3cm diameter of the first-level branches, promote the germination of axillary buds, thereby improving the grafting survival rate of Eucalyptus grandis. The present invention adopts pruning scion in advance, after scion axillary bud germinates, cuts off again and carries out grafting, significantly improves grafting survival rate, has remedied prior art defect, (the method of the present invention is easy to operate, and the fringe that obtains is strong, and axillary bud germination effect is good; In the present invention, grafting can be done at any time, effectively saving the cost of grafting; the grafting survival rate of the present invention is high, which can reach more than 60.0%.

Description

technical field [0001] The invention relates to grafting technology, in particular to a method for improving the grafting survival rate of Eucalyptus grandis Background technique [0002] Eucalyptus is an important afforestation tree species of industrial plantations in southern my country. As of 2015, the area of ​​eucalyptus plantations in my country has reached 4.5 million hm2, accounting for about 2% of my country's forest area. The rapid development of eucalyptus plantations has eased the contradiction between my country's timber supply and demand, effectively guaranteed my country's timber security, improved forest carbon sinks, and made important contributions to promoting forest farmers' employment and income and improving ecological and environmental benefits. However, most of the eucalyptus plantations are pure forests with single species, simple structure, short rotation period, and frequent human disturbance to forest land. With the large-scale planting of eucalyp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00A01G2/30
CPCA01G17/005A01G2/30
Inventor 李昌荣玉桂成陈剑成陈健波赵玉清李建凡唐庆兰郭东强周维
Owner GUANGXI FORESTRY RES INST
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