CN103843587A - Walnut grafting method - Google Patents

Abstract

The invention discloses a walnut grafting method. The walnut grafting method comprises the following steps that (1) in April, mature terminal buds are formed in a walnut tree, the diameter of the terminal buds is from 0.4 to 2 cm, walnut fruit spur secondary tips with 1 to 2 cm immature stems are served as grafting scions, the grafting scions are collected from middle-young improved walnut seed tree, and collected grafting scions are put into a sealed plastic bag; (2) the grafting time is in early May to late May in northern Henan province, stock immature tips are performed cleft grafting at top ends, stock immature tip tops are cut from puerile smooth positions, the immature tips are split, the plastic bag covers the grafting scions instantly, lower ends of the grafting scions are closed in the stock immature stems, and hollow and sealed space is formed above the grafting scions; (3) small openings are formed in the plastic bag to let in fresh air when the grafting scions start budding, the openings are gradually expanded, the plastic bag is removed when small leaves are unfold, and bundled plastic thin film strips are removed when the immature stems at grafting positions start coarsening. According to the walnut grafting method, the quality of the grafting scions can be guaranteed, obtaining is easy, and the grafting surviving rate is larger than 98 %.

Description

A kind of walnut grafting method

Technical field

The present invention relates to a kind of method of walnut grafting.

Background technology

Walnut grafting is a key factor of restriction improved variety of walnut process.Comparatively ripe grafting method is nothing more than indoor pair of whip graft, slotting skin whip graft and box-shaped bud grafting at present.But this several method also has its pluses and minuses separately: the indoor pair of whip graft in winter need to be built Wen Peng, rootstock seedling and be wakened, lay ground hot line, control temperature, survive the operating process of the series of complexes such as rear Nursery stock transplanting, not only take a lot of work, time-consuming, effort, and greatly improved the cost of finished product seedling, its grafting is held at high price; Open up the slotting skin whip graft after leaf spring, require stock rugosity larger, be generally used for the grafting high and changing head of the above stocks of 3 centimetres of rugosity and large tree, also need stock to discharge water, scion is banketed, bagging, windproof, separate the operations such as bag, relatively take a lot of work, and survival rate is unsatisfactory; Applying box-shaped bud grafting summer is a kind of good method, but wastes scion, and heat is unfavorable for work, and the vascular bundle (growing point) that easily comes off while getting bud, thereby impact survives, and also needs to tie up rain cover etc. after grafting, affect grafting speed, be unfavorable for the amount reproduction of finished product seedling.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of walnut grafting method.

Technical scheme of the present invention is: a kind of walnut grafting method, and its step is as follows:

(1) scion: the time is April, and walnut forms ripe terminal bud, terminal bud diameter is 0.4-2 cm, the walnut fruit platform pair scion a little of the long 1-2cm of tender stem; Gather scion from the young and middle-aged breeding elite stand of walnut, airtight plastic sack is put in the scion under adopting immediately;

(2) grafting time is the Henan north last ten-days period in the first tenday period of a month to May in may time, and the tender slightly top cleft grafting of stock cuts a part by two sides, footpath, scion lower end with sharp grafting knife, forms a wedge shape; From the tender smooth tender tip top that cuts off stock of children, the tender tip is rived, by scion top cover plastic sack, lower end is enclosed on the tender stem of stock, forms the confined space of hollow above scion immediately;

(3) after scion, manage: after scion starts to sprout, on plastic sack, open osculum and leak informaton, progressively expand later, when leaflet launches, remove plastic sack, in the time that the tender stem of grafting part starts chap, remove the plastic film strip of binding.

The invention has the beneficial effects as follows: the present invention uses bud grafting, scion quality can ensure, obtains easily, and graft survival rate is high, and survival rate is more than 98%, and managing after grafting is simple, less investment; Relationship between Graft Effect is good, and grafting mouth heals, and growth is fast, has retained the former direction of growth of branch after grafting, and wind resistance folding ability is strong, and vegetative period is long, is difficult for producing freeze injury after grafting survival; Grafting time, in the middle of scion grafting in spring and square bud grafting in summer, has produced the new walnut grafting time period; Grafting method is easily grasped.

Embodiment

A kind of walnut grafting method, its step is as follows:

(1) scion: the time is April, and walnut forms ripe terminal bud, terminal bud diameter is 0.4-2 cm, the walnut fruit platform pair scion a little of the long 1-2cm of tender stem; Gather scion from the young and middle-aged breeding elite stand of walnut, airtight plastic sack is put in the scion under adopting immediately;

(2) grafting time is the Henan north last ten-days period in the first tenday period of a month to May in may time, and the tender slightly top cleft grafting of stock cuts a part by two sides, footpath, scion lower end with sharp grafting knife, forms a wedge shape; From the tender smooth tender tip top that cuts off stock of children, the tender tip is rived, by scion top cover plastic sack, lower end is enclosed on the tender stem of stock, forms the confined space of hollow above scion immediately;

(3) after scion, manage: after scion starts to sprout, on plastic sack, open osculum and leak informaton, progressively expand later, when leaflet launches, remove plastic sack, in the time that the tender stem of grafting part starts chap, remove the plastic film strip of binding.

Claims (1)

1. a walnut grafting method, is characterized in that, its step is as follows:

(1) scion: the time is April, and walnut forms ripe terminal bud, terminal bud diameter is 0.4-2 cm, the walnut fruit platform pair scion a little of the long 1-2cm of tender stem; Gather scion from the young and middle-aged breeding elite stand of walnut, airtight plastic sack is put in the scion under adopting immediately;

(2) grafting time is the Henan north last ten-days period in the first tenday period of a month to May in may time, and the tender slightly top cleft grafting of stock cuts a part by two sides, footpath, scion lower end with sharp grafting knife, forms a wedge shape; From the tender smooth tender tip top that cuts off stock of children, the tender tip is rived, by scion top cover plastic sack, lower end is enclosed on the tender stem of stock, forms the confined space of hollow above scion immediately;

(3) after scion, manage: after scion starts to sprout, on plastic sack, open osculum and leak informaton, progressively expand later, when leaflet launches, remove plastic sack, in the time that the tender stem of grafting part starts chap, remove the plastic film strip of binding.