Windbreak planting technology and management

Saposhnikovia divaricata, also known as Tongyun, Huiyun and Huicao, is a commonly used Chinese medicinal herb. It is mainly used to treat colds, headaches, joint pains and other symptoms. It has extremely high economic value. Many people have obtained great profits by planting it. Let’s talk about the planting technology and management of Saposhnikovia divaricata .

1. Windbreak planting method

1. Site selection and land preparation

Choose high, dry, well-drained sandy loam for planting, and avoid clay soil for wind protection. Saposhnikovia divaricata is a perennial plant with deep roots. The main root can reach 50-60 cm in length. Sufficient base fertilizer should be applied during land preparation. 3000-4000 kg of manure and 15-20 kg of calcium phosphate are used per mu. After deep plowing and fine harrowing, flat beds with a width of 1.3-1.7 meters are made. The beds in the north are slightly wider than those in the south, and the ditch depth is 25 cm.

2. Planting

(1) Spring sowing: Sowing begins in late March to mid-April in the Yangtze River Basin and in early to mid-April in North China.

(2) Autumn sowing: Sowing begins in September or October in the Yangtze River Basin and before the ground freezes in North China. Seedlings emerge in the spring of the following year.

(3) Soak the seeds in warm water for one day to ensure that they fully absorb water and facilitate germination. In the prepared ridges, dig furrows and sow in rows with a row spacing of 30-40 cm and a furrow depth of 2 cm. After sowing evenly, cover with soil, press and cover with grass, and water appropriately to keep the soil moist. Seedlings will generally emerge in 20-25 days. The seed rate per mu is 2 kg.

3. Thinning

When the seedlings grow to a height of 5 cm, start thinning them out according to the standard of 7 cm spacing between plants. When the seedlings are 10-13 cm tall, start transplanting them according to the standard of 13-16 cm spacing between plants.

4. Harvest

The roots of the windproof plant are deep and brittle and easy to break. When harvesting, a deep trench should be dug from one end and the roots should be dug in sequence. Remove the residues on the stems, leaves and soil, remove the hairs when they are half-dried, sort the roots according to their thickness and length, tie them into small bundles of 0.25 kg, and then dry them completely.

2. Windbreak Field Management

1. Weeding

Complete multiple weedings before June, remove old leaves when the plants are closed in rows, then add soil to cover the roots to prevent the plants from falling over. When winter comes, clean the site and add soil again to help the roots overwinter.

2. Topdressing

Top dressing should be done once in early June and late August. It is recommended to use human manure, superphosphate or compost, and apply it between the rows by digging furrows.

3. Irrigation and drainage

The soil needs to be kept moist from sowing until germination. It has strong wind and drought resistance and generally does not need watering after it is fully grown. Pay attention to timely drainage during the rainy season to avoid water accumulation and root rot.

4. Picking stalks

For plants over 2 years old, except for those used for seed preservation, the rest should be removed in time.

5. Pest and disease control

(1) Powdery mildew: The disease is severe in summer and autumn, and leaves are the main affected parts. Phosphorus and potassium fertilizers can be applied to prevent diseases. When the disease occurs, 50% thiophanate-methyl diluted 800-1000 times can be used for spraying for prevention and control.

(2) Yellow-winged fennel borer: It occurs during budding and flowering, and buds and fruits are easily damaged. You can spray 800 times diluted 90% trichlorfon or 300 times diluted BT emulsion in the morning or evening for prevention and control.

(3) Yellow Swallowtail Butterfly: The larvae feed on leaves and flower buds, and begin to damage windbreaks in May. They can be killed manually, or they can be controlled by spraying 800 times diluted 90% trichlorfon or 1000 times diluted 80% dichlorvos emulsifiable concentrate when they are young.

That’s it