The seeds were seeded directly. We must pay attention to the collection of fully mature fruit from the fine mother plant with large fruit and small kernel. Generally, it is better to sow in autumn, and the specific time can be in late September. Pour enough water and cover with fine soil or sand. The next spring, when the seedlings grow to 10 cm to 15 cm, they can be transplanted from the seedbed. If the seeds are sown and propagated in spring, they should be stored in wet sand layer after being washed and dried, and be taken out for strip sowing in early spring. Plum trees propagated with seeds can stand drought. It is suitable for hillside planting. However, the heritability of this method is not stable and the variation is large.
In addition to the seedlings of plum, peach, mountain peach, plum and apricot can also be used as rootstocks. It can be used for lapping or splitting. The so-called lapping refers to that the lower end of the scion and the upper end of the rootstock are all obliquely cut into the shape of a horse ear with a sharp knife, and then align the green peel layer as far as possible, and tie it together; the so-called splitting refers to that the lower end of the scion is cut into a wedge, and the rootstock is split, inserted into the wedge-shaped scion, and pay attention to align the green peel layer as far as possible, and tie it tightly. Both splicing and splitting are done by branch jointing, usually before the sap flows in early spring.
During the growth period of plum trees, bud grafting can also be carried out on the plum and apricot seedlings as rootstocks, that is, at the base of the stem of the rootstock, the bud grafting knife can be used to cut the "t" shape of the xylem, gently open the cortex, cut the bud holes on the branches of the plum varieties that need to be propagated, slightly cut the xylem into shield shaped bud pieces, and quickly insert them into the "t" shape cortex on the Rootstock to tie tightly. After 15 to 20 days, the scion bud has been connected with the rootstock. When the wood heals, it can be untied.
No matter branch or bud grafting, it should be cultivated in nursery for 1 to 2 years after survival, and then used for planting.
In order to quickly obtain the big tree plum blossom, it can be transplanted and cut again after survival. In the next year, it is necessary to replace the good plum varieties on the new branches. With peach as rootstock, grafting is easy to live, and now it is widely used in production.
Common methods are burying roots. Peach grafts plum blossom, which grows fast and blooms early. But it is easy to appear "big and small feet" phenomenon after three years. You can graft plum blossom with peach rootstock first. After grafting grows for one year, all of them are planed up. When planting, make the grafted part lower than the ground plane, and put it into the soil for 4 to 7 cm. Cut several slits in the grafted part of plum blossom with a sharp blade, reaching the xylem, and use 25t rooting powder No.2. The solution was mixed with mud to cover the wound. Another 15 cm to 25 cm soil, pay attention to the moisture. After one year's growth, plum trees can have roots. In this way, when plum trees grow up, they can form two layers of roots. The upper layer is plum root, and the lower layer is peach rootstock. When the upper layer or the ground is planted for greening, the upper layer plays a role and the lower layer can be removed. In this way, plum trees can maintain normal growth.
The Cuttage Propagation of Prunus mume is easy to operate, and the technology is not complicated. When the cuttings are treated with 500 ppm indoleacetic acid or 1000 ppm naphthylacetic acid, the survival rate is improved, and it can also promote the rooting of difficult rooting varieties. The cutting of plum is better in November, so it is easy to take root and survive when the leaves fall and the branches are stored with sufficient nutrients. The thick branches with annual length of 10 cm to 12 cm are selected as cuttings. Most of the branches are buried in the soil when cutting, leaving only two or three centimeters on the soil surface and one bud outside. It is required that the soil of cutting land is loose and the drainage is good.
