Short cutting is also called short cutting or short cutting, that is, a part of the annual branch of 1 is cut off, and a part of the original branch is kept (3/4 or 1/3 or 1/2). Cut the aging branches of perennial fruit trees short, renew the branches, and make the trees grow healthily and bear normal fruits; Short cuttings are also used to cultivate the main branches or auxiliary main branches and side branches of young trees to achieve rapid prototyping.

2, refinement

Thinning, also known as thinning, refers to the pruning method of cutting off from the base of branches. It is mainly used to loosen the long branches of fruiting trees or young trees that are growing too vigorously. Thinning can stimulate the vigorous growth of the remaining branches, improve the ventilation and light transmission conditions in the tree, enhance photosynthesis, be conducive to flower bud differentiation, improve fruit setting rate and improve fruit quality. Under normal circumstances, dead branches, diseased branches, too dense branches, cross branches, weak branches and useless branches should be pruned. For densely clustered branches, the thinning method of 3 thinning 1 or 5 thinning 2 is adopted to remove weak branches and leave strong branches.

3. Telescopic scissors

Telescopic shears are pruning methods for cutting perennial branches from branches. Telescopic shears are often used for adult trees or old trees whose top branches are declining or whose crown is dense outside and empty inside, so as to renew the crown branches by stretching. By retracting and pruning, the purpose of improving the illumination inside the crown and promoting the tree potential is achieved. When retracting perennial branches, according to the actual needs of citrus plants, pruning measures combining retraction with short cutting are often taken, which is beneficial to quickly update the crown.

4. Bud or bud

Summer shoots are often put on buds to avoid a large number of fruit drops caused by competition between summer shoots and young fruits for nutrients. The methods of wiping and releasing buds are also used to avoid the peak period of liriomyza sativae and reduce its harm. It is also used to prevent late autumn buds from sprouting in areas where late autumn buds are frozen.

5. Choose your heart

The method of shortening in advance. When the buds grow to a certain length and are not lignified, picking the top of the buds by hand is called coring. The purpose of picking the heart in different periods is different, but the function is different. From the end of June to the beginning of July, the main branches of young citrus trees in summer shoots were cored to promote branching, increase the number of branches and accelerate the formation of crown. For example, from the end of September to the beginning of 10, the core of long branches is removed, which promotes the growth and enrichment of branches and is beneficial to the differentiation of flower buds.

6. Sustained release

The branches of some 1 year-old citrus plants grow without any pruning until they finally blossom and bear fruit. Usually, the 1 year-old branch of fruit trees is the main bearing branch, and the flower buds are all at the top of the branch. Therefore, in spring, 1 annual branches with no special purpose are generally not cut short, so as to blossom and bear fruit and benefit early.

7. Ring cutting

Ring cutting is a method of cutting off the phloem of branches with a sharp knife and going deep into the xylem without hurting the xylem. The purpose of girdling is to hinder the conduction of phloem, prevent the downward transport of nutrients and increase the accumulation of carbohydrates above girdling of branches. The objects of ring cutting are mainly pomelo trees or citrus reticulata, which grow vigorously and enter the flowering and fruiting period late. Circumcision time: Generally, some main branches or auxiliary branches of plants are circumcised in the first half of September, which is conducive to promoting flower bud differentiation and early fruiting. For pomelo or citrus reticulata with vigorous flowering and low fruit setting rate, girdling in early May is beneficial to improve fruit setting rate. Weak trees, stable trees, young trees under 3 years old or diseased trees should not be circumcised, otherwise extreme situations will occur.