How to plant Bupleurum seeds?

Bupleurum is an herbal medicine included in the Chinese Pharmacopoeia, also known as ground fumigation, mountain vegetables, mushroom grass, etc., the medicinal parts are the dry roots of Bupleurum or narrow-leaf Bupleurum, which is warm and humid, cold-resistant, drought-resistant and waterlogged. It is suitable for planting in deep and fertile sandy loam. Seed breeding or seedling transplanting can be adopted in production. Let's take a look at how to plant Bupleurum seeds.

How to collect seeds of Bupleurum?

The main results are as follows: 1. Plant selection and seed retention: the 2-year-old Bupleurum plants with strong growth, no diseases and insect pests are selected, the selected Bupleurum plants are not removed without bolting, all the plants without seed are bolted, and the seed plants are partially applied phosphorus and potassium fertilizer in field management.

2. Foliar fertilizer spraying: foliar spraying of potassium dihydrogen phosphate can be carried out at the flowering bud stage, with a concentration of 0.2-0.3%, once every 5 days, twice in a row, which can promote fruit development and grain fullness.

3. Collection and storage: from September to November, when the fruit changes from cyan to brown, the upper seed-bearing part is taken back together with the branches and stalks, ventilated and dried, then threshed and dried, and the full and mature seeds are selected by the wind and stored in the jar and jar.

How to deal with Bupleurum seeds?

1. Chemical treatment: soaking seeds with 0.8-1.0% potassium permanganate solution for 10-15 minutes could increase the seedling emergence rate by 15.4%.

2. Hormone treatment: soaking the seeds with 0.5x10-6~1.0x10-6 cytokinin (6-8A) for 1 day, rinsing the seeds with water before sowing, the emergence rate of seeds can be increased by 12.6%.

3. Warm water sand storage: soak the seeds in warm water of 35-40 ℃ for one day, remove the shrunken grains floating on the water, mix 1 seed with 3 parts of wet sand at 20-25 ℃ to accelerate germination, and sow enough seedlings after a part of the seeds are cracked in about 10-12 days.

How to plant Bupleurum seeds?

1. Land selection and land preparation: Chaihu should choose loam and sandy loam or gentle slope land with deep soil layer, loose and fertile soil and good drainage. Plough and rake several times before planting, and apply rotten barnyard manure 30,000 kg / ha. It is 120 cm 130 cm wide, 25 cm deep and 30 cm wide for sowing.

2. Ditching and sowing: before sowing, Bupleurum was horizontally opened into a ditch with a depth of 10 cm on the border surface of the whole land, and then sowed or sowed according to the hole distance of 15 cm. Spring sowing from early April to early May, autumn sowing after seed ripening and drying to soil freezing in early November.

3. suitable time seedlings: bupleurum emerged 12-15 days after sowing. When the seedlings reached 4-5 cm, the seedlings were separated for the first time, and the overdense seedlings and weak diseased seedlings were dropped. When the height of seedlings reaches 8 cm, the number of seedlings should be 675000 ~ 825000 plants per hectare.

4. Replanting and weeding: Bupleurum should be replanted if there are any missing plants in the field, and the seedlings should be watered in time. In the plant closed after no longer ploughing, only by hand to pull out weeds, in order to avoid root damage and yield reduction, generally do not use chemical herbicides to weed.

5. Rational fertilization: during the growth of Bupleurum, topdressing should be applied many times, the first seedling fertilizer should be combined with intermediate ploughing and weeding during the first interseedling, the second seedling application should be combined with intermediate ploughing and weeding when the seedling is fixed, and the third topdressing should be applied when the seedling height is 30cm to 40cm. Potassium fertilizer alone can be foliar sprayed with organic potassium fertilizer.

6. clearing ditches and dehumidification: Bupleurum likes to grow in a humid environment, but it is most afraid of water impregnation in the ground. It is necessary to clean the ditches in time before the rainy season to ensure smooth drainage and reduce the occurrence of field diseases.

7. Removing iniquity and bolting: the aboveground part of Bupleurum grows vigorously, half of the annual plants can bolting and flowering, all the biennial plants can bolting and blooming, and the tillers and new bolting buds can be removed in time, which can promote the accumulation and expansion of plant root nutrition.

8. Pest control: in the prevention and control of Bupleurum diseases and insect pests, we should follow the prevention and control methods of not applying heavy metal pesticides and high toxic and high residue pesticides, giving priority to agricultural measures, and adopting biological pesticides or high-efficiency and low-toxic pesticides.