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Method for improving grafting coalescence rate of torreya grandis

A technology of positive crown rate and Torreya japonica is applied in the field of improving the grafting positive crown rate of Torreya japonica. The effect of promoting positive growth and abundant storage

Inactive Publication Date: 2015-04-22
方乐金
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the grafting method is widely used in China to cultivate fine seedlings of Torreya torreya, but due to the influence of the characteristics of Torreya torreya tree species, the crown of the grafted plant is seriously partial (the main tip of the crown grows obliquely), resulting in slow growth of the mother tree, late fruiting, and low yield.
Moreover, domestic torreya seedlings are cultivated with 2-year-old seedlings as rootstocks, which are cut and grafted at a distance of 8 to 15 cm from the ground. However, due to the influence of the characteristics of the torreya tree species, the seedlings cultivated by grafting, cuttings and other asexual methods all have partial crowns. The main shoot of the crown grows obliquely, coupled with the low grafting position, the vegetative body area of ​​the rootstock is cut off, the scion nutrient hormone level is low, and the proportion of hormones between the main shoot and the side branches is not coordinated.
The existing techniques for cultivating torreya grafted seedlings cannot cultivate positive crown seedlings with positive growth of the main shoot, which leads to the problems of slow growth, late fruiting and low yield of the mother tree after the torreya is built.

Method used

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  • Method for improving grafting coalescence rate of torreya grandis
  • Method for improving grafting coalescence rate of torreya grandis

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Embodiment 1, the method for improving the positive crown rate of Chinese torreya grafting

[0026] Time: Torreya grafting at 10 am on March 15, 2012

[0027] Location: Tunxi District, Huangshan City, Anhui Province, located in the northern edge of the mid-subtropical zone, with a mild climate, four distinct seasons, and abundant rainfall. The annual average temperature is 16.3°C, the annual frost-free period is 237 days, and the annual precipitation is 1670mm. Class and yellow soil, slightly acidic.

[0028] Grafting material: The rootstock for grafting is the 4-year-old seedling of Torreya torreya, planted in the spring of that year.

[0029] Grafting method: pith cambium butt jointing method (scion beveled to pith, rootstock beveled to cambium).

[0030] The grafting operation steps are: (1) scion production: select the scion bar with full terminal buds, and remove the scion blades from top to bottom. Keep about 2-3cm long at the top of the fringe bar, and cut it ...

Embodiment 2

[0036] Embodiment 2, the method for improving the positive crown rate of Chinese torreya grafting

[0037] Time: Torreya torreya grafting was carried out at 10 am on March 17, 2013. There were 300 sample plants, of which 250 were reverse grafted and 50 were directly grafted. The grafting survival rate was 100%.

[0038] Location: Jixi County Zhentou forest farm mountain, climatic conditions are similar to Example 1.

[0039] Grafting material: the rootstock for grafting is the 5-year-old seedling of Chinese torreya, which is planted in the spring of that year; the grafted scion is made by the following method:

[0040] 1) Use a grafted seedling mother plant with a seedling height of 100-150 cm, normal tree growth, and no pests and diseases; at the 1 / 2-3 / 4 of the branches of the grafted seedling mother plant, tie the branches with ropes and lower them towards the ground. , making the angle of inclination between the branch and the main trunk reach 45-60°; 2) within 8h after th...

Embodiment 3

[0044] Embodiment 3, the method for improving the positive cap rate of Chinese torreya grafting

[0045] Time: Torreya torreya was grafted at 10 am on March 16, 2014. There were 320 sample plants, of which 280 were reverse grafted and 40 were directly grafted. The grafting survival rate was 100%.

[0046] Location: Nursery in Zhentou Forest Farm, Jixi County, where the climatic conditions are similar to Example 1.

[0047] Grafting material: the rootstock for grafting is the 5-year-old seedling of Torreya torreya, planted in the spring of that year; the grafted scion adopts the following method to make: 1) adopt seedling height 100~150cm, the growth of tree body is normal, the mother plant of grafted seedling without disease and insect damage; The branches of the grafted seedling mother plant are 1 / 2 to 3 / 4 upwards, and the branches are tied with ropes, and they are lowered towards the ground, so that the inclination angle between the branches and the trunk reaches 45-60°; 2) ...

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Abstract

The invention discloses a method for improving the grafting coalescence rate of torreya grandis. The method includes the steps that cut face inversed grafting is adopted, and then high-position grafting is further matched to enable the torreya grandis to be grafted on tree stock (a main treetop is cut off at the position 50-60 cm away from the ground and two to three circles of side branches are reserved below the grafting position); a coalescence agent and the like are matched to be sprayed continuously; the nutrient and hormone level of the main treetop and the side branches of a grafted plant is changed, and the grafted branches are promoted to grow in the forward direction; the grafting coalescence rate of the torreya grandis is improved, and the torreya grandis of a high-yield tree form is formed. On the premise that the cost is not increased, the purpose that the coalescence rate of nursery stock is more than 90% is achieved, the grafted plant can grow fast, the tree form is good, the method is put into production in advance, and the yield of the torreya grandis is greatly improved.

Description

technical field [0001] This patent relates to plant cultivation technology, in particular to a method for improving the rate of grafted torreya torreya. Background technique [0002] At present, there are few public literatures on the research of Torreya torreya grafting technology, mainly in the following aspects: [0003] 1. Research on the grafting technology of Chinese torreya seed stock. A novel and practical grafting technique for quickly propagating Torreya seedlings by directly inserting Torreya scion into cotyledon suture is called Torreya seed anvil grafting. The main operation steps are as follows: collect mature seeds from high-quality trees with large seeds, thin shells, and full kernels, store them in wet sand to complete physiological post-ripening and stratify germination, select 1.5 cm long radicles as seed stock, and grow vigorously. The middle and upper part of the canopy of Youshu and the annual side branches are used as scions for indoor grafting and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/06A01G7/06
CPCA01G2/30A01G7/06
Inventor 方乐金吴汝章方莹方家兴
Owner 方乐金
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