A Detailed Explanation of Bupleurum Planting Methods and Technical Key Points

AbstractLand preparation and fertilizing: choose loose, fertile sandy loam with deep soil layers and good drainage, then apply base fertilizer after land preparation. Thinning and planting: seedlings can be thinned when they grow to 4-5cm, and planted when they grow to 8-10cm. Replanting and weeding: replant in time, and water and weed after replanting. Reasonable fertilizing: fertilize reasonably according to the different growth stages of the plants. Timely drainage: clear the furrow ditches to prevent waterlogging. Removing tillers and picking off bolting stems: remove tillers and newly grown flower stalk buds in a timely manner, which can be done in batches.

I. Bupleurum Planting Methods

1. Land preparation and fertilizing

Bupleurum prefers warmth, tolerates drought and cold, and fears waterlogging. It should be planted in sandy loam or gentle slope land with loose, fertile soil, good irrigation and drainage conditions, and deep soil layers. Then prepare the land and apply base fertilizer, mainly decomposed barnyard manure, at about 30,000 kg per hectare.

2. Thinning and planting

Bupleurum seedlings emerge about 12-15 days after sowing. When they grow to about 4-5cm, thinning can be carried out, removing weak, diseased, and overly dense seedlings. When the seedlings grow to 8-10cm, they can be planted, at about 67,05-82.5 million plants per hectare.

3. Replanting and weeding

If there are missing plants in the field, replant them in time. After replanting, water is needed. To avoid damaging the roots and reducing yield, do not carry out intertillage after the plants close the rows. Use chemical herbicides as little as possible, so weeding can only be done manually.

4. Reasonable fertilizing

When thinning, fertilizing can be carried out together with intertillage. When planting, fertilizing can also be carried out together with intertillage. When the seedlings grow to 30-40cm, topdressing can be carried out. If fertilizing separately, organic potassium fertilizer can be sprayed.

5. Timely drainage

Bupleurum likes moisture but fears waterlogging. In seasons with a lot of rain, the furrow ditches must be cleared in time to ensure smooth drainage, which can also reduce the incidence of field diseases.

6. Removing tillers and picking off bolting stems

In order to promote the accumulation of nutrients in the plant roots, tillers and newly grown flower stalk buds need to be removed in time, and this can be done in batches.

7. Pest and disease control

Focus on prevention, using high-efficiency, low-toxicity pesticides or biological pesticide preparations for control. Note that highly toxic, high-residue pesticides and heavy metal pesticides must not be used.

II. Bupleurum Propagation Methods

1. Seed propagation

(1) Seed treatment: about 15 days before sowing, soak the seeds in a 6-BA soaking solution for about 24 hours, then place wet sand and the seeds in a container, and sowing can be carried out after about 12 days.

(2) Sowing method: generally sow Bupleurum at the end of March in spring, at about 1-1.5 jin per mu. For drilling, the row spacing is about 30 cm; for hole sowing, the row spacing is about 23-27cm. Plant ash and seeds can be mixed evenly and then broadcast, followed by covering with soil, covering with a layer of wheat straw, and watering. Autumn sowing is done before freezing, and the rest is the same as spring sowing.

2. Seedling propagation

(1) Sowing: at the end of March, sow by broadcasting or drilling. When broadcasting, be sure to level the seedbed surface and make shallow grooves, then evenly scatter the treated seeds on the seedbed surface, then cover with soil. For drilling, open furrows at a row spacing of about 10cm, then cover with soil, cover with a layer of grass, and water.

(2) Seedling transplanting: seedlings emerge about 10 days after sowing. They can be planted when the root crown diameter is about 2-3 mm and the root length is about 5-6cm. Disease-free, relatively sturdy seedlings can also be selected and planted at a plant spacing of about 10cm and a row spacing of about 25cm. Note that they must be dug and planted immediately. To improve the survival rate, water immediately after planting.