Detailed Explanation of Key Points for High-Yield Cultivation Techniques of Scutellaria barbata

I. Soil Selection: Scutellaria barbata prefers a warm climate and a moist, partially shaded environment. It is best to choose loose, fertile, well-drained soil for planting, and waterlogging must be avoided.

II. Seedling Cultivation: Seed propagation is the main method, though division propagation can also be used.

1. Seed propagation:

A. Seed collection. In autumn, when the small seeds turn yellowish-brown, collect the mature seeds promptly, sun-dry them, remove impurities, place them in cloth bags and store them in a dry, ventilated place for later use.

B. Raising seedlings. In spring from March to April, or in autumn from September to November, open shallow furrows (4-6 cm) on a leveled and finely raked seedbed at a row spacing of 15-20 cm for drilling, with a sowing width of 10 cm. Scatter an appropriate amount of burnt soil ash on the bottom of the furrows, water the furrows or apply dilute human manure and urine, then evenly scatter the seeds mixed with fine soil, and sprinkle a thin layer of fine burnt soil ash or fine loess on top, and finally cover with rice straw or other mulch. Keep the seedbed consistently moist; germination and emergence generally occur in about half a month. After emergence, remove the mulch, strengthen seedling-stage management, and transplant to the field when the seedlings are about 5 cm tall.

C. Direct sowing. Generally carried out in spring. On the prepared bed surface, open furrows at a row spacing of 30 cm and a depth of 3-5 cm. Evenly scatter seeds mixed with fine burnt soil ash or fine loess into the furrows, cover with a thin layer of fine fertile soil, then cover with straw to keep the soil layer moist. Seedlings emerge in about half a month. After full emergence, remove the straw, carry out seedling-stage management well, and use 1 kg of seed per mu.

2. Division propagation: After the autumn harvest, dig out the old root clumps together with their fibrous roots. Select vigorous root clumps free of pests and diseases and divide them into several small clumps. Then, on the prepared planting site, dig holes at a row spacing of 30 cm and a plant spacing of 7-10 cm, plant one small clump in each hole, cover with soil and press firm after planting, apply dilute human and animal manure water, and sprouts will emerge in the following spring.

III. Land Preparation and Fertilization: Before planting, plow the soil. In conjunction with land preparation, apply 1 ton of decomposed stable manure or compost and 25 kg of cake fertilizer or compound fertilizer per mu, then make raised beds 1.3-1.5 m wide and open drainage ditches well.

IV. Transplanting: Seedlings raised in spring are transplanted in autumn from September to October, and those raised in autumn are transplanted in the following spring from March to April. Open horizontal furrows at a row spacing of 25-30 cm and plant one plant every 7-10 cm. For hole planting, plant at a spacing of 20 cm between both plants and rows, with one plant per hole. After planting, cover with soil and press firm, and water thoroughly to settle the roots.

V. Field Management

1. Intertillage, weeding and topdressing. When the seedlings are 1-2 cm tall, apply 1 round of dilute human manure and urine water together with weeding, using 1 ton per mu as a seedling-promoting fertilizer. When the seedlings are 3-4 cm tall, thin and fill in seedlings at a plant spacing of 3-4 cm, then apply human manure and urine water once each. For division propagation, when new shoots sprout from the root clumps, carry out intertillage, weeding and topdressing once, and thereafter keep the field free of weeds. After each harvest, topdress once to promote the sprouting of new branches and leaves. After the final harvest in November, apply a heavy winter fertilizer: open furrows between rows and apply 2 tons of decomposed stable manure and 25 kg of cake fertilizer or superphosphate per mu (these need to be mixed and composted), then cover with soil and earth up to help preserve warmth and protect against cold.

2. Drainage and irrigation. During the seedling stage, keep the soil consistently moist, and irrigate promptly during dry seasons. In the rainy season, dredge ditches and drain water promptly to prevent waterlogging from drowning the roots and seedlings.