The latest tutorial on cultivation techniques and methods for Corydalis decumbens

Corydalis decumbens is a traditional Chinese medicinal herb. It gets its name because in summer it draws nutrients from its root system to sprout and grow, causing the medicinal part to become hollow or rot and making it impossible to harvest, hence the name "summer without." Its root tubers are used as medicine and have the effects of promoting blood circulation, activating blood, relieving pain, stopping bleeding, and relieving spasms. It can treat conditions such as rheumatoid arthritis, hemiplegia, high blood pressure, and sciatica, and its medicinal value is extremely high. So how should it be cultivated? Let's take a look together.

1. Site selection and land preparation

Corydalis decumbens has low requirements for soil. Apart from poorly drained clay, it can be planted in general soils, with well-drained, fertile, loose sandy loam being best. Because it cannot be planted in summer, idle field plots can be used for planting. Before planting, plow the soil deeply and apply base fertilizer. If conditions permit, the soil can be disinfected and sterilized. Then make beds 1-1.2 m wide, with ditches about 30 cm wide and 20-30 cm deep.

2. Seed selection and planting

Before planting, first select good seed tubers. The transverse diameter of the seed tubers should be about 1 cm. Choose current-year tubers that are bright in color, free of wounds, and free of pests and diseases. Store the seeds by digging a pit and keeping them in sand. Choose a dry, well-drained location with a low groundwater table, ventilated and shaded. The best sowing time is late October in clear weather. Open holes on the bed surface at a spacing of 8×10 cm, with a hole depth of 3-4 cm. Place one seed tuber in each hole with the bud eye facing upward, cover with a layer of plant ash or fine soil, cover with a layer of rice straw, and then water to keep the soil moist. Use about 40 kg of seed per mu.

3. Field management

After seedlings emerge, water frequently to keep the soil moist and promote seedling growth. After watering, weed promptly, preferably by hand. After watering, the soil tends to harden, and loosening the soil can make it loose, increase permeability, and promote seedling root growth, but pay attention to the depth to avoid damaging the roots. After weeding and loosening the soil, apply fertilizer once, mainly organic fertilizer or urea, topdressing once every 20 days. In the later stage, mainly apply phosphorus and potassium fertilizer to increase yield.

4. Pest and disease control

The main diseases of Corydalis decumbens are sclerotinia and downy mildew. When sclerotinia occurs, promptly pull out the diseased plants and spread lime powder in the diseased holes for disinfection to prevent the disease from spreading, or spray zineb in the early stage of the disease for control. When downy mildew occurs, zineb can also be sprayed for control, once every 5-7 days, with good results.

The above is an introduction to the cultivation techniques for Corydalis decumbens. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.