Introduction to cuttage propagation of Ginkgo biloba

Ginkgo biloba is a common seedling and has many uses. There are four common breeding methods of ginkgo biloba: cutting, ramet, grafting and sowing. The editor will introduce you to the more common methods of cutting propagation.

Ginkgo biloba

Cutting propagation can be divided into old branch cutting and tender wood cutting. old wood cutting is suitable for the breeding of large area greening seedlings, and tender wood cutting is suitable for the breeding of a small number of seedlings in families or garden units. The old branch cutting is usually from March to April in spring, picking ears from the finished nursery or selecting 1-2-year-old high-quality branches from the big tree, cutting into cuttings 15 cm ~ 20 cm long, the upper cut should be smooth and round, and the lower cut should be in the shape of Mal. After cutting, tie them into a bundle every 50, rinse them with clean water, soak them with 100ppm's ABT rooting powder for 1 hour, and cut them in fine yellow sand or loose seedbed soil. After cutting, enough water is poured to keep the soil moist, and it can take root after about 40 days. It will be managed normally after survival and can be transplanted in the spring of the following year. From late May to mid-June, cuttings that have not yet lignified around the rhizosphere of Ginkgo biloba or on the branches (cuttings about 2 cm long, leaving 2 leaves) are cut, inserted into a container and placed in a place of scattered light, changing water every 3 days or so until calli are grown, which can be transplanted into yellow sand or seedling bed soil, but sunshade before and after noon on a sunny day, and leaves should be sprayed 2 ~ 3 times. Enter the normal management after survival.

How to cuttage propagation of ginkgo biloba

Cutting Propagation time of Ginkgo biloba

Ginkgo biloba can be propagated by cuttings in spring and autumn.

When cutting in spring, you can choose the tender branches of the same year. Generally, the germinating new branches on the ginkgo plant are selected, and when they grow to the length suitable for cutting, they can be removed for cutting.

If the cuttage is carried out in autumn, you can choose the mature branches of the same year, at this time, the new branches of the year are basically fully developed, and you can choose the branches of moderate length to do cuttings.

Selection of cuttings for cutting propagation of Ginkgo biloba

In the cultivation of ginkgo biloba, it is necessary to select branches with terminal buds for cutting. generally, they are cut into branches with 3murmuri 5 nodes, the length is between 10--15cm.

The rooting of ginkgo cuttings is still relatively slow, so the section where the cuttings want to take root can be glued with rooting powder to improve the survival rate of cuttings.

Cutting methods of Ginkgo biloba

In the cuttage container, put the right amount of soil, do not put too full, generally 6 Murray 8 points can be full. Keep the soil moist, put the cuttings into the soil and keep them in a semi-shady place, which is beneficial to the growth of the roots.

General autumn cuttings, about 4 weeks, you can see that the base of the cuttings is long out of adventitious roots, while the pre-soaked ginkgo cuttings have more new roots, and the survival rate is also relatively high.

For ginkgo cuttings in spring, the surviving plants can be transferred to a round basin of caliber 7.5cm, and ginkgo biloba cut in autumn can be transplanted in the following spring before new leaves germinate.

Introduction to four Propagation methods of Ginkgo biloba

Picture: grafting method of Ginkgo biloba

[FAQ] what are the propagation methods of ginkgo trees?

[expert answers]

1. Sowing and reproduction

After the seeds are harvested in autumn, the exocarp is removed and the seeds with mesocarp are dried so that they can be sown in winter in the same year or in spring the following year (if sowing in spring, mixed sand must first be accumulated to accelerate germination). When sowing, the seed germ was placed horizontally in the sowing ditch. After sowing, the soil was 3 / 4 cm thick and compacted. In the same year, the seedlings can grow to 15: 25 cm high, and can be transplanted after defoliation in autumn. It must be noted that special nurseries should be established for sowing and reproduction. The nursery should select places with high topography, good drainage, adequate water sources and convenient irrigation, at the same time, intensive cultivation, leveling the ground, applying sufficient base fertilizer, and paying attention to the control of underground pests. The sowing quantity depends on the size of ginkgo. Generally, 667m2 sowing 25kg can produce 15 ~ 20 000 seedlings. The row spacing of sowing is 20-30 cm and the plant spacing is 10 cm. Both border sowing and furrow sowing can be done. When sowing seeds in the trench, first pour the bottom water, then put the ginkgo side in the ditch, if it has sprouted, place the bud tip down, then cover the soil for about 3 cm, and then cover with a layer of plastic film to maintain humidity and temperature. When the germ is unearthed, properly aerate, gradually uncover the film. After June, shade should be provided if conditions permit. The seedlings of Ginkgo biloba are tender and weak in the first year, so it is not suitable to apply excessive chemical fertilizer. In case of heavy rain, release water in time and loosen the soil at the right time.

2. Tillering propagation

The roots of big trees are easy to produce a large number of sprouting tillers, and if they are allowed to grow naturally for many years, they can form a ginkgo garden landscape of "holding children in their arms". If you cut off the roots and tillers to breed the seedlings, it will not only save seeds, but also grow fast and blossom and bear fruit early.

Two methods can be used for tiller propagation: one is to use the original root tiller to cut off propagation. The second is to dig trenches and cut roots to promote the propagation of new tillers.

It is the easiest method to use the original root tiller to cut off and propagate. In July and August every year, the root tiller is peeled in a circle before the soil is cultivated. After more than one month, the new root can be produced, and the mother can be cut off and planted directly in the spring of the second year. Digging trenches and cutting roots to promote new tillers will be carried out in autumn. At that time, in the appropriate place near the big ginkgo tree, the annular trenches of 50 cm in depth and width will be dug, the lateral roots will be cut off, and the soil mixed with fertilizer will be filled, and the new seedlings can be cut off after growing for one year. The seedlings propagated by tillers can be planted directly and do not need to be cultivated in the nursery. Therefore, it is called tillering seedlings, which is actually tillering plants.

3. Cuttage propagation

The main results are as follows: (1) the old wood cuttings are generally cut from the 1-or 2-year-old strong and substantial branches of the mother plant from March to April in spring, cut into cuttings with a length of 10-15 cm per segment, cut in fine yellow sand or loose soil, pour enough water after cutting, keep the soil moist, and take root for about 40 days. After the survival, carry on the normal management. It can be transplanted in the spring of the second year. This method is suitable for greening and raising seedlings in a large area.

(2) in the first ten days of July, the semi-lignified branches of the same year were taken and cut into two-bud cuttings or three-bud cuttings, soaked in 100 mg/kg ABT rooting powder, inserted into the permeable sandy soil seedbed, shaded, kept the air humidity, and then transplanting with soil after rooting.

4. Grafting propagation

Grafting propagation is the main propagation method in the cultivation of Ginkgo biloba, which can bear fruit earlier and make the plant dwarf, fullness and high yield.

Grafting is usually carried out from mid-March to early April by means of subcutaneous branch grafting, peeling grafting or cutting grafting. Most of the scions were selected from 20-30-year-old plants with strong growth and exuberant fruit. Generally, about 4 short branches on 3-4-year-old branches are selected as scions, and each plant is usually grafted with 3-5 branches. The fruit began to bear fruit 5 ~ 8 years after grafting.

[editor's comments] Ginkgo biloba can reproduce through a variety of methods, the most commonly used are sowing seedlings, cutting seedlings, plant propagation, and grafting reproduction. These four methods are the most common ways of ginkgo biloba reproduction. Horizontal planting and seedling propagation can also be adopted to accelerate seedling reproduction, and the use of laboratory tissue culture is also a way to promote reproduction.