Key Technical Guidance Points for Early-Stage Planting and Management of Chuanwu (Aconitum carmichaelii)

I. Site Selection and Land Preparation

Chuanwu has relatively strict soil requirements. A sunny slope should be chosen, with higher terrain, ample sunlight, deep, loose, fertile soil, and convenient drainage and irrigation. Neutral oily sandy soil, white sandy soil, and gray loess soil are most suitable for cultivation. However, continuous cropping must be strictly avoided. The best preceding crops are potato and corn. After at most two years of planting, crop rotation must be carried out; otherwise, diseases are likely to occur, seriously affecting yield. Chuanwu has strict land preparation requirements. After harvesting potatoes and corn, the land should be plowed and sun-baked in a timely manner to fully mature the soil, increase fertility, and reduce pests and diseases. Before sowing, apply base fertilizer at 30-60 kg of compound fertilizer per mu, then plow twice more to make the soil fully uniform, fine, and loose. Then make beds 2 m wide and 20 cm high, and open drainage ditches in the field, ensuring the three-ditch system is complete.

II. Sowing

Chuanwu is mainly propagated using root tubers. The size of the root tubers is related to the yield level. The key guidance for growers is that seed root tubers should preferably be 150 per kg, with a sowing rate of 100-120 kg per mu. Sow in furrows in early or mid-November, with a furrow depth of 18-20 cm. When sowing, plant the root tubers "upside down," with the buds facing downward and the roots facing upward. This is one of the high-yield measures. After sowing, cover with soil. A density of 15,000 plants per mu is preferable. If too dense, leaf powdery mildew will be severe, resulting in low yield and poor quality. If too sparse, the yield will be low.