Single stem pruning and shaping method

1. The method of pruning and coring in the first year. In the first winter, the robust branches of one-year-old seedlings were selected as the main culture, and a bud opposite to the lower interface bud was left as the main extension branch under a short cut of about 1750px. The branches left from the cut trunk are strong and weak. As an auxiliary branch, the crown is sparse when it is formed. In order to make Chimonanthus praecox bloom before molding, short branches and middle branches on the trunk should be pruned in summer to promote branching. Prune the heart every 3 pairs of buds, sometimes even when 1-2 pairs of buds appear. Summer pruning usually stops after March to June and July to August. 2. Pruning method in the second year. The next winter, lengthen the trunk, cut the branches short, leave a bud under the incision and change direction. In order to prevent the lateral branches under the cutting mouth from growing too vigorously and competing with the central branch, two pairs of lateral branches under the cutting mouth bud must be cut off. The left branch is only used as an auxiliary branch, which should not be cut short, but should be long and slow. In summer, coring can control the growth of lateral branches and promote the growth of main branches. 3. The pruning method in the third year is the same as that in the previous year, except that the top of the trunk is cut off to prevent it from elongation and growth again, and buds scattered in three directions are left as main branches under the incision. In order to make it continue to stretch, after the branches are pulled out, 15~500px should be cut according to the growth strength, and a bud should be left at the incision to change the direction of the new branches and weaken their growth. If there are upper and lower opposite buds, cut a section together with the mother branches in summer, leaving the square buds as branches. In the range of about 750px between the three main branches and the trunk, the oblique branch is selected to cut off the top and leave a lateral bud as a lateral branch. 3. The side branches on the main branch are arranged on the corresponding side to avoid overlapping. For the remaining branches on the main branch, cut off the buds at the base of the strong leaves again; The medium-long weak branch leaves 1~2 buds short, and two medium-short branches grow in the second year. 4. Pruning method in the fourth year The pruning method in the fourth year is the same as before, except that the second side branch is in the opposite direction.

Main branch pruning and shaping method

According to the simple pruning method of flowers and ornamental trees, cultivate three main branches and then divide them into lateral branches. Leave 3~5 short nodes on the flower branches, and the new branches will grow to 10 cm, thus topping the heart and promoting flower bud differentiation.

Three-book pruning and shaping method

The shape of a plant divides into three main branches directly from the root.

Multi-dry pruning forming method

In the first year, take more than three thick and evenly distributed branches directly from the roots as the trunk to cut short, with a length of 3-5 knots. In the second year, the main branches should be properly bundled into clusters to avoid overlapping and crossing branches.

Specific operation

Retain trunk

Chimonanthus praecox has strong tillering ability, often sprouting a large number of clustered branches from the roots, but these clustered branches generally do not differentiate flower buds. Therefore, Chimonanthus praecox should leave a trunk of about 30 cm, then cultivate three main branches and then branch out side branches.

Select the core and cut off the tip

After the crown is basically formed, the extended branches of the main branches are cored or pruned in summer to weaken their growth. The fragile branches are supported by pillars, which make them in the vertical direction and enhance their growth. In winter, cut 1/3 from each of the three main branches, let them sprout new buds, and select excellent side branches from them. After pruning, the lateral branches on the main branch should be gradually shortened from top to bottom to make them scattered.

Short truncated lateral branch

The flower bud of Chimonanthus praecox is solitary on the branch, which is differentiated from the axillary bud of the new branch of that year. At the top of short side branches, 3~4 slightly longer side branches can be formed in the upper part and many small side branches can be formed in the lower part. These lateral branches are the main flowering branches and will produce a large number of flower buds.

Fruit removal, core removal and back cutting

On the one hand, young fruits should be picked after the flowers wither, on the other hand, they should be pruned in time. Whe