Pruning young trees: according to the design density of the orchard, pruning is carried out according to the designed tree shape and tree structure, and the cultivation of fruiting branches is basically completed. There are three main branches commonly used in peach trees: Happy, Y-shaped and trunk-shaped. The height of seedlings is 40~60cm, and small and medium fruit branches are evenly distributed on the main branches.
Pruning of peach trees in the first fruit period: the first fruit period is generally 3~5 years after planting. During this period, the tree size reached the design requirements, the plastic work was completed, the tree length tended to ease, and the output increased year by year. The main task is to continue to cultivate backbone branches, while paying attention to cultivating fruiting branches. Results vigorous branches were selected in the branch group, which could be formed after 3~4 years of short cutting and thinning. Large, medium and small fruit branches should have branch extension branches. By changing the growth direction, the branches will bend upward to prevent the lower part from being weak, the upper part from being too strong and the lower part from being too thin.
Pruning of peach trees in full fruit period: 1, pruning of fruiting branches. Results Branch pruning can adjust the density between branches, from dense to sparse, from weak to strong, update and rotate, and maintain good ventilation and light. The general requirements are decentralized growth, uniform layout, reasonable angle, and distinguishing between primary and secondary. 2, long tip pruning. It is mainly to simplify pruning techniques, save pruning labor, make trees bear fruit early, achieve high and stable yield, and easily maintain the balance between vegetative growth and reproductive growth of trees. Generally, 1 long fruiting branches are reserved at the main branch 15~20cm, and the distance between branches on the same side is generally above 40cm. The amount of branches left in the whole tree is 50%~60% of the traditional short pruning method. The length of reserved fruit branches should be 40~70cm.
Pruning of peach trees during senescence: its main tasks are: trunk branches are retracted and renewed, and fruiting branches are cultivated by using long branches germinated in the inner chamber, mainly to maintain a certain yield, and pruning in winter. Replace weak backbone branches with big branches in proper positions, and try to leave long branches in the inner room and lower part, and use long branches as backbone branches. When the tendrils grow to 40~50cm, the branches are cut or cored to promote the secondary branches to germinate, and then the secondary branches with appropriate angles and orientations are cultivated into elongated branches, and then cultivated into fruiting branches to fill the gaps. The result branch group should be retracted, shortened and updated, and as many preparatory branches as possible should be left.