Pruning of young peach trees;
According to the designed density of orchard and the designed tree shape and tree structure, the cultivation of fruiting branches is basically completed. Peach trees are usually three main branches, two main branches or spindle-shaped. The stem height is 40~60cm, and the distance between the upper and lower branches of the trunk is about 20cm. The opening angle of the main branch is 30 ~ 50. 2~3 lateral branches are cultivated on each main branch, and the angle of the lateral branches is 60 ~ 80. Small and medium-sized fruit branches are evenly distributed on the main lateral branches.
Pruning techniques of peach trees at the initial fruit stage;
The first fruiting period is usually 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. Cultivation and pruning of fruit branches. Results vigorous branches were selected in the branch group, which could be formed after 3~4 years of short cutting and thinning. Small fruit branches are made of short thick branches and divided into 2~4 fruit branches. 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. Results Branches were pruned according to the method of leaving 6~ 10 flower buds for long fruit branches, 6~8 flower buds for middle fruit branches and 3~4 flower buds for short fruit branches, and only sparse flower buds were left for bouquets.
Pruning techniques of peach trees in full fruit period;
Pruning of fruit 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.
Trim the long tips. Pruning long branches is mainly a way to promote varieties with long branches and long fruits. 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. When pruning long branches, the density of remaining branches is generally every 15~20cm on the main branches and large fruit branches, and the spacing between branches on the same side is generally above 40cm. The amount of branches retained in the whole tree is 50%~60% of that of the traditional short pruning method. The length of reserved fruit branches should be 40~70cm.
Pruning techniques of peach trees during senescence;
Its main task is to recover and renew the backbone branches and cultivate the fruiting branches by using the elongated branches germinated in the inner chamber to maintain a certain yield. Mainly winter scissors. 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 ~ 50 cm, cut off the branches or remove the core to promote the germination of secondary branches. Then the secondary branches with appropriate angles and orientations are cultured into elongated branches, and then cultured 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.