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Through several years of trials and comparisons, it was found that the restoration of gardens with roots was better. The specific approach was: Excavate and cut frozen roots of frozen citrus trees, and select roots with thumb-thickness to turn over the ground. 17 centimeters, using cut joints, the root system (from the tree shrew) that will be used as the rootstock is cut with a grafting knife at the site where the formation layer meets the xylem, and the scion (with one bud) is cut and inserted into the root incision. , wrap tightly with a thin film and release the film after the scion survives. For orange trees rooted for 3 years, the average height and diameter of the citrus tree were 205 and 230 cm, and the main trunk was 23 cm thick, which corresponds to about 8 years of canopy for conventional transplanting and transplanting. After 3 years, the average plant height and crown diameter were 180 and 140 cm, respectively. Grafting trees produced three or more branches in the year, and fruiting and fruiting in the second year. The average yield was about 2 kilograms, and the highest was 4 kilograms; the third year, the highest strain was 17 kilograms, and the average strain produced 10 kilograms; the fourth year The highest strain produced 31 kilograms and the average strain produced 22.5 kilograms. The early results of the grafted trees were 1 to 2 years earlier than those of the transplanted trees, and the results were earlier than the conventional transplanting trees for 2 to 3 years. It is worth noting that rooted seedlings do not grow "straightly" and the seedlings grow upright. At the beginning, they need to be supported by bamboo (wood) sticks or earth-cultivation methods to grow the soil high and low, forcing the trunk to grow straight. In addition, the amount of growth of the rooted tree is large, and pruning should be mainly based on thinning, short shearing, and retraction to avoid premature canopy closure and affect yield.