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Mongolian oak bare-rooted seedling grafting method

A bare-root seedling, direct technology, applied in the field of Quercus mongolica bare-root seedling grafting, can solve the problems of unfavorable callus, large temperature difference between day and night, and low survival rate of outdoor grafting, and achieve the effect of easy management, simple operation and high survival rate

Inactive Publication Date: 2016-11-23
DAILING FORESTRY RES INST OF HEILONGJIANG PROVINCE
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Problems solved by technology

In addition, the temperature in early spring in the northeast forest area is low, especially the large temperature difference between day and night, which is not conducive to the formation of callus, and the survival rate of outdoor grafting is low.

Method used

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Embodiment Construction

[0018] Before the sap flows (in Heilongjiang and Jilin in the middle and late March, in Liaoning in the middle and early March, and in Beijing and Hebei in the middle and late February), the annual branches of the crowns of excellent trees are collected, and the cuttings can be directly grafted or stored in the cellar (-5 ℃~0℃); in the fall of the year before grafting, that is, in the middle and late October, the 2-3 year old seedlings were dug out and planted on the spot. ℃~0℃), the most suitable rootstock is three-year-old bare-root seedlings, if managed well, two-year-old seedlings that meet the requirements for grafting are also acceptable; 7-10 days before grafting (late March), take out the stockpiled rootstock and Scion, wake up indoors: Use wet saw foam with a moisture content of 50-55% to cultivate the root of the rootstock, place the scion flat and bury it in the wet saw foam, the best room temperature is 22°C-25°C, and it can be done when the rootstock buds expand. ...

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Abstract

The invention relates to a tree seeding raising method and in particular relates to a Mongolian oak bare-rooted seedling grafting method. The method is characterized by collecting scions from annual branches of crowns at the middle-upper parts of superior Mongolian oaks and selecting two-three year old Mongolian oak transplanting bare-rooted seedlings as rootstocks; taking full advantage of the favorable condition of heating in winter in the north to carry out scion and rootstock awakening treatment indoors; adopting tongue grafting and carrying out special culture on grafted bodies. The Mongolian oak bare-rooted seedling grafting method provided by the invention has the effect of forming the matching technology from rootstock and scion awakening, indoor grafting, grafted body culture, and the like, is simple and convenient to operate and easy to manage and has high survival rate.

Description

technical field [0001] The invention relates to a tree seedling raising method, in particular to a method for grafting bare root seedlings of Quercus mongolica. Background technique [0002] Quercus mongolica belongs to Fagaceae, Quercus, deciduous tree, up to 30 meters, bark taupe, deeply longitudinally fissured. Crown oval. Alternate single leaves, obovate leaves, wavy serrated margins, dark green leaf surface, light green backside, unisexual flowers, monoecious, ovate or oval nuts, fleshy cotyledon seeds. Cell chromosomes: 2n=24. It is a national second-class precious tree species in China and an important hard broadwood tree species in the forest regions of Northeast China. It is mainly distributed in Northeast China, North China, and Northwest China, and a small amount is also distributed in Central China. The existing seedling raising method mainly relies on sowing and breeding, the seedling raising efficiency is low, the variation of offspring is very large, and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/06
CPCA01G2/30
Inventor 张桂芹黄秦军苏晓华李国强陈显锋
Owner DAILING FORESTRY RES INST OF HEILONGJIANG PROVINCE
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