Four tips to improve the survival rate of flowers and trees grafting are introduced as follows:
First, choose the appropriate grafting season. The grafting season of flowers and trees varies with the scion used for grafting.
Branching is mostly carried out in spring, and it is generally best when the juice of rootstock begins to flow; Bud grafting can be carried out in the whole growing season of flowers and trees, especially when the cortex of rootstock is easy to peel off.
The second is to optimize the rootstock tree species. Rootstock trees have strong affinity with cuttings, which is the premise and foundation for the survival of flowers and trees.
If the affinity between them is not strong, the ability to produce healing tissue between rootstock and scion is weak, it is difficult to form new conduction tissue, and the transportation of water and nutrients is not in place, grafting will fail.
Therefore, rootstocks are generally selected for grafting, and other tree species with strong affinity can also be selected as rootstocks (such as black pine as rootstocks of five-needle pine, peach and plum as rootstocks of plum blossom, citrus as rootstocks of kumquat, water wax and Ligustrum lucidum as rootstocks of osmanthus fragrans, etc. ).
Generally speaking, it is best to choose young trees as rootstocks.
Because of the strong vitality and growth potential in this period, it is easy to form healing tissue.
Third, properly handle cuttings, and it is best to choose robust and vigorous branches as cuttings and plant them on middle-aged and young mother trees with vigorous growth and no pests and diseases.
Bud grafting mostly adopts new buds born in the same year, and grafting while picking; Annual branch buds collected during dormancy can also be used for bud grafting, but grafting with this kind of wood buds must be kept fresh under wet and low temperature conditions.
When grafting, fully lignified or semi-lignified branches should be used as scions. If the scions are collected from other places at harvest, the scions should be well preserved and kept warm (methods such as sealing the base of the scion with wax, burying it in wet sand, spraying water and storing it in the cellar can be used for proper treatment).