I. Young forest management
1, trimming and shaping:
Pruning and shaping can generally be carried out at the height of young forest 1.5-2.0m, so as to promote branching, and the number of branches can be kept at 2-3/plant, especially for overgrown branches, cross branches, dead branches, over-dense branches, pests and diseases branches, thin and weak branches, etc. Disturb the shape of the tree and be cut off from the bottom.
2. Shading and moisturizing:
An important task of young Illicium verum forest management is to cover most of the bare open space. Natural plants such as weeds, shrubs and miscellaneous forests can be used as shade trees to balance soil temperature, keep woodland moist, prevent sunburn and reduce soil erosion.
Second, forest management.
1. Pruning and shaping: cut less or no sparse branches, properly re-cut the inner branches with few or too dense fruit or lower crown, lightly cut the outer branches or upper middle branches of crown, and re-cut the branches with many dry branches and abnormal growth and development. Generally, the top cutting and bud removal can be carried out 3-4 years after planting, and the leaves can be picked and steamed after 4-5 years.
2. Reclamation: Reclamation can change the soil structure of Illicium verum, thus supplementing the water in the soil and promoting the normal differentiation of flower buds and the growth and development of young fruits. Reclamation usually takes 3-4 years 1 time.
Extended data:
Illicium verum planting technology;
1, forest land consolidation:
Illicium verum should be planted on the north slope of hilly and mountainous areas with undulating terrain and relative shelter from the wind, with deep and loose soil layer and convenient irrigation. Planting under natural miscellaneous forests can take advantage of its shading effect. Therefore, when clearing the forest land, only shrubs, vines and low small trees are cleared, and banded land preparation or full reclamation land preparation is planned in a unified way.
2, timely colonization:
The best afforestation time of Illicium verum is around the great cold. It is best to sow on the same day. If it cannot be planted immediately, it should be dipped in yellow mud and transported to the afforestation site for afforestation. In order to improve the survival rate of afforestation, it is best to choose rainy days for afforestation, and the survival rate can reach 85%-90%. The planting depth is 2-3 cm from the soil surface to the root neck.
3, scientific fertilization:
The best time to fertilize Illicium verum is February and June every year. Spring fertilizer can promote long branches, and summer fertilizer can promote the vigorous growth of Illicium verum. In addition, compound fertilizer should be applied 1-2 times a year, and the amount of fertilizer applied each time is 0.5- 1.0 kg/plant. The use of special fertilizer and compound fertilizer adopts the method of furrow covering soil, and the yield increase effect is obvious.