Cultivation techniques of Angelica dahurica

Angelica dahurica Root medicine has the functions of dispelling disease and dehumidification, expelling pus and promoting blood circulation and relieving pain. it is mainly used for the treatment of cold, headache, rhinitis, toothache, red leucorrhea, pain, furuncle, swelling and toxin, and can also be used as spices.

Angelica dahurica requires deep tillage layer, loose and fertile soil, warm sunny and moist sandy loam with good drainage. After the harvest of the previous crop, ploughing and drying and raking in time, make a high border with a width of 100-200 cm and a height of 16-20 cm, and the furrow is 26-33 cm wide (high border is used in areas with poor drainage), and about 150 kg of plant ash is applied per hectare.

Angelica dahurica is propagated with the seeds harvested in that year. It is generally sowed in autumn and sowed before the End of Heat to the Autumn Equinox, that is, from early August to early September.

Bai Zhi is suitable for live broadcast, hole broadcast and strip broadcast. The bed was watered thoroughly before sowing, and after the water seeped, the seeds began to sow. The seeds should be removed from the wing membrane, then soaked in warm water (45 ℃) for 6 hours, then dried and sown. Hole sowing according to row spacing of about 33 cm, plant spacing of 16-20 cm, hole depth of 6-10 cm, watering after sowing, sprinkling or covering grass often keep the soil moist. Seedlings emerged 10-20 days after sowing.

First, intercropping. Angelica dahurica

II. Field management

⑴ watering: Rain Water sufficient places do not need watering, but in arid and semi-arid areas, before sowing must be deep water, turn the soil to preserve soil moisture, after sowing drought, soil moisture is not good, must be watered, about 4 times watering can sprout, often keep the soil moist, before Lesser Snow should be watered to prevent Angelica dahurica from drying to death in winter. The following spring watering before and after the Qingming Festival, every 10 days after watering, to summer should be watered every 5 days, in the summer should keep sufficient water.

⑵ inter-seedling: when the spring seedling is 6 cm high, carry on the inter-seedling, select the weak seedling appropriately, when the seedling height is 13-16 cm, leave 1-2 strong seedlings in each hole, and keep one strong seedling every 16 cm.

⑶ intertillage weeding: every time interseedling, intertillage weeding should be carried out, the first time when the seedling height is 3 cm, the second time when the seedling height is 6-10 cm, and the third time when the seedling is fixed, the soil should be loosened and weeded, and after the plant is closed, it can no longer be ploughed and weeded.

⑷ topdressing: in that year, topdressing should be less and lighter. In the second year, topdressing should be done 1-2 times before ridge closure, combined with interseedling and intertillage. The amount of topdressing cake fertilizer per hectare is 2250-3000 kg. It can also be replaced by chemical fertilizer and human and animal manure. Spraying phosphate fertilizer outside the roots after the rainy season also had a significant effect.

⑸ selection of improved varieties: when picking Angelica dahurica in the autumn of the second year after planting, choose the main root stout, no bifurcation, according to row spacing 80-100cm, plant spacing 30cm, concentrated planting on fertile ground, strengthen field management, increase fertilizer, seeds can mature one after another in late June of the following year, and should be picked along with maturity at this time.

III. Pest control

⑴ spot blight. Methods of prevention and treatment: ① was used to remove the diseased and disabled tissue and burn it centrally. ② is sprayed with Bordeaux solution of 1 and 100 Bordeaux or with 65% Dyson zinc wettable powder 400-500x.

⑵ Huang Phoenix butterfly. Control methods: ① artificially killed larvae and pupae. ② 90% trichlorfon 800x liquid spray, every 5-7 days, 3 times in a row, or with cyanobacterium (10 billion spores per gram of bacterial powder) 500x liquid spray.

⑶ aphids. It belongs to the family Homoptera aphids. Adults and nymphs harm young leaves and tops. For prevention and control methods, see Astragalus disease and insect control.

⑷ red spider. Control method: clear the garden in ① in winter, pick up the litter and burn it, and spray 1 Baumedu stone sulfur mixture after clearing the garden. In April, ② began to spray Baumetolite sulfur mixture once a week, several times in a row.

Fourth, harvest and processing. Angelica dahurica When the leaves are withered and yellow, dig up the roots, shake off the soil, dry them according to the main and lateral roots and large and small roots, and store them in a dry and ventilated place. Angelica dahurica da