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Method for increasing grafting survival rate of eucalyptus cloeziana

A technique of large inflorescence eucalyptus and survival rate, applied in the directions of grafting, application, cultivation, etc., can solve problems such as hindering the construction process of seed gardens, low grafting survival rate, etc., and achieves improving grafting survival rate, high grafting survival rate, and saving grafting cost. Effect

Active Publication Date: 2019-10-18
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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  • Method for increasing grafting survival rate of eucalyptus cloeziana

Examples

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 increasing the grafting survival rate of eucalyptus cloeziana. The method comprises the steps of (1) cultivating scion mother plants; (2) cultivating strong scions; (3) pre-treating the scions; (4) cutting the scions for grafting and the like, wherein after terminal buds at the portions with the diameter of 0.3 cm of first-grade branches are cut off, germination of axillary buds is further promoted, and correspondingly the grafting survival rate of eucalyptus cloeziana is increased. According to the method, the scions are trimmed in advance, and the axillary buds are cut off for grafting after the axillary buds of the scions germinate, so that the grafting survival rate is obviously increased, and the defects of the prior art are overcome; the method issimple in operation, the obtained scions are strong, and the germination effect of the axillary buds is good. According to the method, grafting can be carried out during picking, so that the graftingcost is effectively reduced; the grafting survival rate is high and can reach 60.0% or above.

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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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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