The latest course of grafting Propagation techniques of kapok

Kapok is a kind of plant with high economic value, which not only has high ornamental value, but also has certain medicinal value such as flowers and bark. And the flying catkins produced after the fruit is ripe can also replace cotton as the raw material of quilt and quilt jacket. There is a wide range of planting areas in China, but both ornamental and medicinal plants need to be propagated. So the editor brought the grafting breeding technology of kapok today, let's take a look at it!

1. Cultivate rootstocks

The seed maturity time of kapok is about Ching Ming Festival every year. Kapok seeds have high oil content and low storability, so they are easy to fail to germinate, so they are generally sown as they are picked. When raising seedlings, we generally give priority to sowing and strip sowing, pay attention to row spacing and depth when sowing, cover fine soil after sowing, cover straw, change and germinate in about a week, and the seedlings can be ready in two weeks. After breaking the soil, the seedlings should do a good job of loosening the soil and weeding properly, transplant the seedlings to a nutrition bag when they grow to about 6 cm and grow 2 leaves, and graft them when the DBH of the seedlings grows to 20-30 cm.

2. Scion selection

We should choose the unflowered branches with sturdy, full bud eyes and no wounds, diseases and insect pests from the mature and flowering kapok mother plants as scions. The diameter of branch scion should be kept at about 1 cm, and the distance between bud eyes should not exceed 2 cm. After cutting off the scion, remove the leaves from the branches to prevent the moisture from evaporating, and then wrap the branches in a cool place with a wet cloth. If storage is needed, seal the ends of the branches and buy them into a sand bed, then cover the branches with a sand layer of about 5 centimeters, water them properly and do a good job of ventilation.

3. Timely grafting

Different regions have different grafting time, generally to avoid April-May, because the temperature is relatively high at this time, it is easy to lead to scion death. First of all, select the full buds on the scion and cut the plane with xylem about 1.8 cm in the lower part of the reverse side. Then it is cut into an inclined plane of about 46 degrees on the reverse side, truncated at the top 0.9 cm, and the scion length is controlled at about 5 cm. Then cut the rootstock seedling about 16 cm from the ground, cut the grafting interface longitudinally, and insert the cut scion into the grafting interface to ensure that the two sides are closely grafted and the top of the scion is white. Then wrap it in, clip the grafting clip, and wrap a grafting film in the bud.

4. Post-management

The survival of the grafted seedlings should be checked after about half a month of grafting. When the buds are fresh and the petiole is gently touched, it means that they have survived, otherwise they have not survived and should be regrafted in time. After survival, the bud eye should be allowed to break the membrane by itself. when all the grafted seedlings turn green and unfold, the protective film should be loosened in time to prevent the growth of new shoots from being affected, but the healing area should be solved later to avoid scion injury. And the rootstock sprouts should be removed in time to prevent the nutrition from being too scattered and concentrate the nutrition on the new shoots. Finally, we should do a good job of weeding and fertilizer and water management in mid-ploughing, mainly applying a small amount of fertilizer and increasing the proportion of nitrogen fertilizer.

The above is a brief introduction of kapok grafting breeding technology, kapok grafting survival, but also pay attention to the prevention and control of diseases and insect pests. Generally speaking, the pests of leaf beetles and ulnar moths are the main pests, which seriously harm the growth of survived grafted seedlings and reduce the planting benefit. That's all for today's introduction. This article is for reference only. Thank you for your reading and support.