Detailed Explanation of Key Points for High-Yield Cultivation Techniques of Saposhnikovia divaricata

Saposhnikovia divaricata is also known as Guan Fangfeng. It is a perennial herb of the Apiaceae family, with its root used as medicine. It is mainly produced in Heilongjiang, Jilin, Liaoning, Inner Mongolia and other places. The plant height is 50-70 cm. The root is thick and grows vertically. It grows wild in grasslands, forest edges and sandy soil. It is cold-resistant and drought-resistant. It dislikes excessive moisture and waterlogging. Because the price of wild plants has risen year after year. Artificial cultivation of Saposhnikovia divaricata has high yield and stable returns, making it a good project for developing cultivation.

Cultivation techniques:

Land selection and preparation:

Saposhnikovia divaricata is a deep-rooted plant. During land preparation, 2000-3000 kg of farmyard manure and 20 kg of superphosphate must be applied to increase soil fertility and promote root development. Make beds 1.3 m wide or form ridges 0.5 m wide for later use. For large-scale cultivation, ridge formation with direct sowing is preferable. 2 Seed propagation: Saposhnikovia divaricata can be sown in spring, summer, autumn or early winter. Winter sowing is done before the soil freezes, and seedlings emerge in early spring. For spring and summer sowing, the seeds need to be soaked in 30-40 degree water for 48 hours to absorb enough water, then mixed with three times their volume of wet sand and stratified at a suitable temperature for 10-12 days before sowing, or sown when the seeds just begin to crack open. Open furrows 3 cm deep on the prepared ridges and sow evenly, then press firm. The sowing rate is about 2.5 jin per mu. If drought occurs, water in time and keep the soil moist during the seedling emergence period. For bed sowing, a row spacing of 30-35 cm is suitable.

Field management:

For bed cultivation, when the seedlings are 5-6 cm tall, thin to a spacing of 8-10 cm; for ridge cultivation, when the seedlings are 10-15 cm tall, thin to a spacing of 6-7 cm, preferably keeping staggered seedlings. 2 Weeding and earthing up; weed in time to prevent weeds from growing alongside the crop. Generally, the rows close over in July and August. At the same time, 20-25 kg of ammonium sulfate can be applied to promote seedling growth. When one-year-old Saposhnikovia divaricata plants are relatively small, earthing up can be done once after autumn to protect the roots for overwintering. In the following year, apply human manure water and 20-30 kg of superphosphate to strengthen the roots. 3 Removal of bolting stems; for one-year-old or two-year-old or older growing plants, if bolting stems appear, remove them promptly to promote root growth.

Pest and disease control:

1. Powdery mildew, control with 0.2-0.3 degree Baume lime sulfur mixture. 2. For insect pests, choose low-toxicity, pollution-free pesticides to kill insects. Make the product free of pesticide residues and conform to GAP medicinal material production standards. Harvesting and processing: Harvest in autumn and winter, depending on growth conditions. Harvest when the roots are 30 cm long and more than 1.5 cm thick. Harvesting too early results in low yield, while harvesting too late causes the roots to become lignified. After digging out the roots, remove residual stems, leaves and soil, and when half-dried, remove the fibrous roots, grade by length and thickness, tie into small bundles. Dry in the sun and it is ready. The yield is about 300-500 kg per mu.