1. Seedling shaping. Bare branches, horizontal branches and straight branches that grow too much and are disturbed on the main branches should be cut off from the base, such as dense branches, thin branches, pest branches and dead branches. Leaf forests generally grow to the height of1.3m. Removing the terminal buds promotes the growth of lateral branches and gets more branches and leaves.

2. Prune strong trees. After entering the big fruit period or the big harvest period of branches and leaves, the branches, dead branches and tender branches of diseases and pests should be removed in time, and the density and distribution of branches should be adjusted.

When the fruit is too dense, the branches with few branches should be trimmed properly, and the sparse branches should be cut lightly or not; The inner branches of the lower part of the crown should be properly cut off, and the middle, upper and outer branches of the crown should be lightly cut; When the growth and development are abnormal, the heavy cutting and light cutting of multi-insect branches and dry branches will develop well.

3. Update and trim old trees. Clean up pests and diseases, dead branches, weak branches and useless long branches, and cut short and update the main branches with strong regeneration ability.

Pick your heart

From late April to early May, except for the extended branches of octagonal trunk, other vigorous new buds can be picked, and the new buds are 20 cm long. Removing 3 ~ 4 young branches from the top of new shoots can inhibit the vegetative growth of Illicium verum and promote the reproductive growth of Illicium verum. Plant growth regulators can also be used to delay or inhibit the growth of new buds. For example, paclobutrazol is applied to soil, the purity of each plant is 1~4G, and the concentration of foliar spraying is 500 ~ 2000mg/L. ..

Because different tree species and different soils need different concentrations, it is best to prepare several kinds of liquid medicines with different concentrations, spray them on different branches, and then compare them with clear water. The concentrated solution with obvious effect can be popularized on a large scale. Using plant growth regulators can save a lot of labor. The author suggests this method.

Spin, spin

There were several hurricanes from mid-May to early June. When the new branch is not lignified, twist the new branch with upright back, competitive branches of branches at all levels, competitive branches growing inward and temporary branches 180 at the base 3~6cm, so that the xylem and phloem are slightly damaged without breaking. Pruning, also known as taking branches or softening branches, is an effective measure to control annual branches. It is usually carried out from the end of August to the beginning of September, that is, within one week after the star anise is picked.

After tending the twisted branches of Illicium verum, the vegetative growth is greatly alleviated, which can promote the transformation of these branches into fruiting branches in the second year. Rotating branches is the main technology to increase the yield of Illicium verum, and it is best at sunny noon because the branches are soft and easy to operate.