Cultivation Methods and Technical Key Points for Cubeb Litsea

Climate and Soil: It prefers a warm and humid environment. Seedlings need shade, while mature trees prefer sunlight. The suitable annual average temperature is 18-22°C, and the annual rainfall is 1800-2000 mm. It has low requirements for soil. It is best to plant in deep, fertile, well-drained red loam or yellow loam.

Land preparation: Choose a fertile slope with good drainage and irrigation, clear and deep-plow the entire area, and break up and level the soil. Build seedbeds 20 cm high and 1.2 m wide in the nursery area. For the forest land, choose gently sloping land and carry out strip land preparation along the contour lines, with a strip width of about 1 m, then dig holes at a row spacing and plant spacing of 3 x 2 m, with holes 50 cm wide and 40 cm deep.

Planting (1) Seed propagation and seedling raising: Select mature, plump fruits and collect seeds in time. Litsea cubeba has a dormant period. For seeds that have been washed and dried in the shade, it is best to sow them after a winter of storage and germination promotion. After 1-2 years of seedling raising, when the seedlings are 60-70 cm tall, they can be lifted from the nursery and planted out. (2) Field planting: Plant in early spring or late autumn. After lifting the seedlings, trim the roots, keep soil around the roots, or dip the roots in mud slurry. Plant 2-3 plants per hole, firm the soil after planting, and water thoroughly to settle the roots. Direct seeding for afforestation is also possible. Dig holes measuring 30 x 30 x 15 cm, sow 6-8 seeds per hole, and cover with 2 cm of soil.

Field management: During the young forest stage, tending and management should be strengthened. Carry out intertillage, weeding, and topdressing 2-3 times each year, mainly with nitrogen fertilizer. Short-stemmed crops can be intercropped between the rows. After the forest is established, carry out intertillage, weeding, and topdressing at least once each year; also cut off the top of the main trunk of the plants to promote dwarfed plants and make fruit harvesting easier. When entering the flowering stage, identify male and female plants. Generally keep 8%-12% of male plants as pollinator trees, remove excess male plants, and replant female plants in time. Pest and disease control: Red spider mites and leaf roller caterpillars harm the leaves. They can be controlled by spraying with 40% dimethoate emulsifiable concentrate at 1000 times dilution or 80% dichlorvos at 3000 times dilution.