Juglans mandshurica bud grafting method

Abstract

The invention provides a juglans mandshurica bud grafting method. The method includes steps: (1) in the middle of April, selecting developmental branches in the same year to serve as scions; (2) picking the scions when needed or keeping the scions for temporary storage; (3) keeping the row spacing of rootstocks larger than 20cm*20cm; (4) lowering a greenhouse before grafting, and arranging shadingnets to surround two sides of the greenhouse; (5) selecting grafting blades; (6) taking polyvinyl chloride films as tying straps, and cutting; (7) selecting grade-1 seedlings as the rootstocks, and keeping bud grafting width not larger than rootstock thickness; (8) grafting by two persons, wherein one person cuts the rootstocks while the other person takes grafting buds, a grafting process is completed by once cutting, the depth is slightly over a ligneous portion, cut smoothness and straightness are guaranteed, and rootstock cutting length is identical to grafting bud cut length; (9) makinga water line below the rootstock cutting position; (10) aligning the grafting bud to a rootstock forming layer, and tightly binding with the plastic films; (11) untying 40 days later after grafting. The method is low in cost, simple in process and high in propagation coefficient, and by double grafting, great grafting effects are achieved, and high grafting success rate and preservation rate are realized.

Description

technical field [0001] The invention relates to the technical field of budding of seedlings, in particular to a method for budding of walnut bark. Background technique [0002] In the actual process of forestry production, juglans regia is mostly used for seed propagation, because the seed propagation of juglans regia easily causes variation, and its excellent characters cannot be fixed. Therefore, the breeding method of walnut catalpa is the technical bottleneck for the development of improved varieties and industrialization of juglans regia in Changbai Mountains. [0003] The existing vegetative propagation methods are mainly cutting propagation. The technical process is as follows: (1) Making the bed matrix: using vermiculite as the matrix. (2) Buckle shed: Use the iron frame to cover the black nylon net to form a shade shed, and cover the 70% shade net. (3) Substrate disinfection: The substrate was sterilized with 5% potassium permanganate 1 day before cutting. After...

AI Technical Summary

Problems solved by technology

[0005] 1. The cost is high, and the temperature and humidity in the shed need to be monitored for a long time and adjusted manually

[0006] 2. The process is cumbersome, requiring matrix disinfection, cuttings preparation and processing

[0007] 3. The preservation rate is low. Since the cuttings are generally processed in July, it takes 40 days for rooting to enter the deciduous period.

Due to the short growth period, its lignification degree is not good, which eventually leads to its low preservation rate

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