First, choose the type of scion
1. Select good varieties based on ecological conditions, and follow the reasonable mix of early and late-maturing varieties.
2. Strict control of the scion quality The scion shall be collected from the virus-free original species scion nursery or the virus-free species mother tree garden as much as possible, and be collected on the result tree with robust growth, pure varieties, and high quality. Select 1-year-old shoots full of shoots and branches.
Second, combining the tree transformation to determine the grafting site
In accordance with the requirements of the standardized tree structure, choose to leave the skeleton of the tree well, select the high-receiving parts and sites, and the backbone branches should be moderate, no branches need to be kept, branches need to be grafted, excess branches should be removed once, and the center should be dry. The main branch extension head was grafted at 30 centimeters at the last branch of the earth, and the rest of the branches were 10-20 centimeters long. It was necessary to restore and expand the crown as soon as possible, and the number of joints was better. A 5-year-old tree can have about 10 rootstock joints. Generally, the larger the tree age, the greater the number of joints.
Third, the high access period
Fruit trees can be traded high throughout the growing season, but the main high-reap periods are spring and autumn. For different tree ages, the high spring connection in spring and the high contact in autumn should be applied in conjunction. Generally, fruit trees above 5 years old are mainly spring-jointed, and they are best from before and after budding to leafing, and are supplemented by high-needs in autumn; the tree below 5 years old promotes Autumn buds dominate, followed by high spring supplements. Early branching, low temperature, weak formation activity, slow tissue growth, and difficult to heal the interface. Generally require that the rootstock and scion formation activities be roughly the same, the rootstock activity should precede the scion, and the scion is preferably in the late stage of passive dormancy. That is, buds do not sprout and rootstock sap has started to flow, and it is best when the physiology is in an active state. The best period for autumn budding is from early August to early September.