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Method for grafting, cutting and fast propagating Chinese white poplar twig

A technique for grafting cuttings and poplar tomentosa is applied in the field of rapid propagation by grafting and cutting of poplar tomentosa shoots, which can solve the problems of short seedling time and difficulty in raising poplar tomentosa, and achieve the effects of rapid breeding, improving the breeding speed of fine varieties and high reproduction coefficient.

Active Publication Date: 2012-11-21
曹帮华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned existing technical problems, the present invention provides a method for rapid propagation of Populus tomentosa twig grafting cuttings, which has fast propagation speed, high survival rate, and short seedling time, effectively solving the problem of difficult seedling cultivation of Populus tomentosa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Grafting: In June, use the next year's flat stubble seedlings of Taiqing poplar as the rootstock, and budding Populus tomentosa in the shape of "Ding" and "one whip" from 10cm above the ground every 5cm until it reaches 20cm from the tip, and the budding survives Rate 95%;

[0014] (2) Ear cutting: After grafting, remove the top tip of the rootstock to promote bud germination, erase the relative rootstock buds on the cuttings, remove the binding objects in 10 days, and the new shoots grow to 5cm in 10 days, and cut the rootstock after new leaves are drawn. Cuttings into 5cm cuttings, the upper incision is a flat incision, the lower incision is an oblique incision, one bud for each ear, and the upper incision is 1-2cm away from the bud;

[0015] (3) Cutting: After cutting the cuttings, keep one rootstock leaf per ear, and immediately insert the rootless graft obliquely into the full-light intermittent spraying cutting nursery pond. The substrate is a mixture of sand ...

Embodiment 2

[0018] (1) Grafting: In August, use the cutting seedlings of Taiqing poplar in the same year as the rootstock, and carry out budding of Populus tomentosa in the shape of "Ding" and "one whip" from 10cm above the ground every 8cm, until it reaches 25cm from the tip, and the buds survive. Rate 96%;

[0019] (2) Ear cutting: After grafting, remove the top shoot of the rootstock to promote bud germination, remove the binding objects in 20 days, erase the relative rootstock buds on the cuttings, and grow the new shoots to 10cm in 15 days, and cut the rootstock after new leaves are drawn. Cuttings into 8cm cuttings, the upper incision is a flat incision, the lower incision is an oblique incision, one bud for each ear, and the upper incision is 2cm away from the bud;

[0020] (3) Cutting: After cutting the cuttings, keep one rootstock leaf per ear, and immediately insert the rootless graft obliquely into the full-light intermittent spraying cutting nursery pond. The substrate is a mi...

Embodiment 3

[0024] (1) Grafting: In July, use the next year's flat stubble seedlings of Taiqing poplar as rootstock, and carry out budding of poplar tomentosa in a "ding" shape and "one whip" every 10cm from 10cm above the ground, until it reaches 30cm from the tip, and the buds survive Rate 98%;

[0025] (2) Scion cutting: After grafting, wipe off the relative rootstock buds on the cuttings, knock off the top buds of the rootstock to promote bud germination, remove the binding objects in 15 days, and the new shoots grow to 15cm in 25 days, and cut the scions after new leaves are drawn. Cuttings into 10cm cuttings, the upper incision is a flat incision, the lower incision is an oblique incision, one bud for each ear, and the upper incision is 1cm away from the bud;

[0026] (3) Cutting: After cutting the cuttings, keep one rootstock leaf per ear, and immediately insert the rootless graft obliquely into the full-light intermittent spraying cutting nursery pond. The substrate is a mixture o...

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Abstract

The invention discloses a method for grafting, cutting and fast propagating a Chinese white poplar twig, and relates to the field of woods elite breeding; and with the adoption of the method, the purpose of fast propagating Chinese white poplar own-rooted seedling is achieved. The method has the advantages that (1) maternal excellent characteristics can be maintained; (2) the seedlings are grafted in June to September every year; the sprout grafting survival rate is up to 95% above; seedlings produced in a cuttage pool with diameter of 10 meters are 10000 to 35000 plants; the survival rate ofcuttage seedlings is up to 95% above; the survival rate of transplanted new seedlings is up to 90% above; the seedling from emergence to the end of Autumn in the same year is 0.5-1.5m high; the seedling growth amount in the second year is up to 4m above, which is 1.5-2 times higher than that of Paonian seedling that is a kind of poplar, so that the seedling culture year limit is shortened; (3) Yitiaobian (another kind of poplar) twig grafting and twig grafting body cuttage can be combined to be performed for multiple times in summer; the propagation coefficient is high; and the elite breedingspeed is greatly improved; and (4) Taiqingyang (another kind of poplar) has the characteristics of easiness in rooting and easiness of twig in rooting; and the tow characteristics are fully utilized and combined to turn the Chinese white poplar new stem rooting from hard to be easy.

Description

technical field [0001] The invention relates to the field of forest tree breeding, in particular to a method for rapid propagation of Populus tomentosa twig grafting and cuttings. Background technique [0002] Poplar tomentosa ( Populus tomentosa Carr) is a large deciduous tree of Salicaceae and Populus, with fast growth, straight and straight trunk, and beautiful tree shape. It is an excellent tree species for afforestation and greening. Populus tomentosa is native to China and is widely distributed. It is an excellent landscaping tree species; it has strong adaptability and is also a good shelterbelt tree species; poplar tomentosa is also an important fast-growing timber tree species and raw material for pulp. [0003] But poplar tomentosa seedlings are extremely difficult to breed, conventional cutting propagation does not take root; root propagation is restricted by the number of mother trees, and the seedlings are uneven and poor in quality, how to solve the breeding ...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G1/06A01G31/00
Inventor 曹帮华伏洪英曹曦东徐桂娟
Owner 曹帮华
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