No matter the seedlings planted in spring, summer and autumn, when the new shoots grow to about 10cm, only one strong branch is selected for each plant, and the extra new shoots are stuck to the roots and wiped off. When the seedlings grow to a height of about 20 cm, they should be tied to the first iron wire off the ground on the shelf with slings to make them grow upright and avoid being blown off by the wind. For vigorous plants, when the seedling height is 1.2m, all the secondary branches growing on the main vine before and after coring are polished, and all the other secondary branches are left with 1-2 leaves for repeated coring. The extension branches at the top of the main vine can be left for secondary coring, and all the secondary branches are left with 65,438. Plants with weak growth potential, whether tall or short, should all be cored at the top of the main shoot within 3~5 days after July 20. After enucleation, all the auxiliary branches grew out except the five leaves above, and all the other leaves were enucleated again. Don't wait for the branches, wait for the branches. The purpose of this is to change the ineffective growth consumption into effective accumulation, make the main shoot thicker, improve the lignification degree and expand the root system, and lay a solid foundation for safe overwintering and vigorous growth in the coming year. By mid-September, in order to minimize ineffective growth and consumption, it is necessary to retract and prune in time, that is, all new shoots and leaflets (secondary branches above the second time and leaflets less than half of normal leaves) are removed, leaving thick leaves. In October, all the leaves are frosted and trimmed. When pruning, the main vines whose height exceeds 1 m should be pruned where the branches are mature and the cutting thickness reaches 1 cm; The main vine with a height of about 1 m should be cut off where the branches are mature, with a thickness of 0.8 cm; For the main vine whose height is less than 0.5m, leave 3~5 full buds above the ground and then cut them off. After the main tip is cut off, all the auxiliary tips are also cut off.