Can mulberry trees be grafted in winter?

Mulberry can be grafted in winter, and the technology of mulberry bud grafting in winter is idle in winter, so the grafting time is sufficient and the work can be done very carefully. After bud grafting, the contact time between the bud piece and the rootstock is long, it is easy to heal after spring, the grafting survival rate is high, and the scion germinates and branches early.

However, the rootstock and scion are dormant in winter, and there is no cell division after grafting, so the callus can not heal. Grafting is equivalent to storing buds in the incision of rootstock and wrapping them with film to protect the wound from water loss or infection. After the spring, the temperature reaches about 65438 06℃, and the healing process will gradually proceed.

To improve the survival rate of mulberry bud grafting in winter, we should focus on the following links.

1. Grafting time. Grafting is generally carried out on sunny or cloudy days before mulberry leaves fall to spring germination, and it is best to graft mulberry leaves at the peak of dormancy from late June to February of the following year (it is best to start thawing in cold areas). After grafting for half a month, check whether it survives. If the bud of the bud piece is soft, the bud piece is dry, and the cut surface and interface are black, it can't survive, so it should be patched. If the grafted buds are full, fresh and tightly wrapped, they will germinate and survive in the next spring.

2. Selection of excellent mulberry cuttings. Good mulberry trees with vigorous growth, high yield, strong stress resistance, good leaf quality, early germination and late hardening are reserved for cutting as mother trees, and annual trees with full buds, complete buds, no side branches and appropriate thickness are reserved for cutting, which are now used for grafting. If cuttings are transported from other places, the harvesting and storage time should be shortened as far as possible, and the cuttings should be stored well to prevent them from losing water and drying up and keep them fresh.