Traditional Chinese medicine Angelica dahurica planting time and planting origin as well as planting techniques?

Radix angelicae Dahuricae likes mild and humid climate and sunny environment, so correctly mastering the planting time of Angelica dahurica is the key to improve the yield of Angelica dahurica. We need to know more about how to increase the yield of Angelica dahurica. Traditional Chinese medicine Angelica dahurica planting time? What is the planting area of Angelica dahurica? Planting techniques of Angelica dahurica?

Planting time and place of planting of Angelica dahurica

Planting and new production time: Angelica dahurica was planted in Sichuan and Bozhou before the year, and began to produce new things in June of the following year; Hebei Angelica dahurica Therefore, Angelica dahurica da

Harvest time of Angelica dahurica

1. Angelica dahurica da

2. Angelica dahurica da When the leaves are orange and yellow, cut off the leaves of Angelica dahurica on a sunny day as compost, then dig up the roots with a tooth rake, shake off the soil, and transport them to the sun farm for processing.

Sowing time of Angelica dahurica

1. Spring sowing: spring sowing time is generally around the Qingming Festival, but the output is low, the quality is poor, generally do not use.

2. Autumn sowing: the time of autumn sowing should not be too late, and the earliest can not be earlier than the End of Heat, otherwise it will grow rapidly in the winter of that year, most of the beads will bolt and blossom in the second year, and their roots can not be used for medicinal purposes, but no later than the Autumn Equinox. Because the rainfall after the Autumn Equinox is getting less and the temperature is lower, Angelica dahurica can not germinate for a long time after sowing, affecting growth and yield, so it should be sown in early August and early September.

Sowing method of Angelica dahurica

Baizhi is suitable for direct seeding, not suitable for seedling transplanting, the roots of the transplanted plants are bifurcated, rooting and growth is poor, affecting the yield and quality. Adopt hole sowing and strip sowing, pour water through the border before sowing, and start sowing after the water seeps down. Before sowing, the seeds should be mechanically removed, then soaked in warm water (45 ℃) for 6 hours, then dried and sowed.

1. Hole sowing: hole opening according to row spacing of about 33 cm, plant spacing of 16 cm to 20 cm, hole depth of 6-10 cm, watering after sowing, watering or grass mulching often keep the soil moist. The seedlings emerged 0-20 days after sowing, and the main root of Angelica dahurica sown in autumn was large and the yield was high.

2. Strip sowing: ditch according to the row spacing of 33 cm, spread the seeds evenly, cover the fine soil, the sowing rate is more than 15 kg per hectare, and the others are the same.

Planting techniques of Angelica dahurica

Angelica dahurica It has the effect of dispelling disease and dehumidification, expelling pus and generating muscle, promoting blood circulation and relieving pain. it mainly treats cold, headache, rhinitis, toothache, red leucorrhea, pain and furuncle swelling and poison, and can also be used as spice. Its planting management is relatively simple, but in order to achieve high yield and high efficiency, it is necessary to master the following key points:

First, select suitable plots and make fine land preparation

Angelica dahurica Its main root is thick and long, deep in the soil, and grows well in the sandy loam soil with deep, loose and fertile soil, moist and well drained. It is not suitable to plant in the land with shallow soil layer, more gravel, sticky texture and easy waterlogging.

The ability of top soil of Angelica dahurica seed germination is weak, in order to ensure the whole seedling, the quality of soil preparation must be improved. After the plot is selected, the Kang is turned over deeply, and the tillage depth is required to reach more than 30 cm. Before sowing, 1000 kg of high-quality mature farm manure (or 100kg of bio-organic fertilizer) was applied per mu, and 50 kg of slow and controlled release fertilizer was released by Kim Jong-da. Once again, the land was ploughed and raked, so that the fertilizer and topsoil were mixed evenly, and then ditched and opened up according to the width of 1.5-1.8m. The box soil will be leveled and broken as far as possible to create a good sowing environment.

Select new species and sow seeds at the right time

Angelica dahurica If the seeds are purchased from other places, the germination test must be done before sowing to ensure that the quality of the seeds is correct and then planted in a large area.

Angelica dahurica can be sowed in spring or autumn, but it has higher yield and better quality in autumn. Autumn sowing should be from early August to early September, neither too early nor too late. Early (earlier than the End of Heat), it grew rapidly in winter that year, and most of the plants would bolt and blossom the next year, resulting in Lignification of the rhizome, which could not be used as medicine; too late (later than the Autumn Equinox), the rainfall decreased gradually, the temperature became lower, and the seedlings could not germinate quickly after sowing, affecting growth and yield.

Generally open ditches to sow when soil moisture is suitable, with a row spacing of 30 cm and a seed of about 1 kg per mu. It is best to soak the seeds in warm water for 6 hours before sowing, remove and drain them and mix them with sifted fine soil before sowing to ensure that the seeds fall evenly. After sowing, cover the seeds with fire dung or fine soil, slightly suppress so that they are in close contact with the soil and promote seedling emergence. The plots with high groundwater level can be cultivated with high ridges to increase the thickness of soil layer and reduce soil moisture.

Angelica dahurica

Third, strengthen field management and strictly prevent early bolting of plants.

1. Intermediate seedling and fixed seedling

Generally, seedlings can emerge 10-15 days after sowing. When the seedling height is 5cm to 6cm, the weak seedlings are too dense in combination with the weeding room in the middle tillage. When the seedling height is 10 cm to 12 cm, the seedlings are fixed according to the plant distance of 15 cm. When the seedlings are fixed, the plants with overgrowth, bluish white petiole and early bolting may be pulled out, and the missing seedlings are replanted at the same time.

two。 Intermediate ploughing and weeding

The first time in the seedling height of 5 cm to 6 cm combined with inter-seedling, this time the ploughing should be shallow, weeds near the seedling must be pulled out by hand to prevent damage to the seedling. The second time in the seedling height of 10 cm to 12 cm combined with fixed seedlings, the depth of loosening soil can be slightly deeper. The third time was carried out when the weeds sprouted in the early spring of the following year, this time the ploughing should be deep, combined with the intertillage to fix the seedlings for the last time. After the plants grow up and close ridges, they generally no longer carry out intermediate ploughing and weeding.

3. Look at the seeding and dressing.

Although Angelica dahurica likes water and fertilizer, it is easy to bolting if it grows too much in the early stage, which affects the expansion of underground roots. Generally speaking, in the seedling emergence stage after sowing, the soil on the side of the box should be kept moist to promote seedling emergence. After completing the seedlings, the supply of water and fertilizer should be controlled in the early growth stage to prevent the seedlings from flourishing and growing. After the Beginning of Summer in the second year, we should increase the supply of water and fertilizer according to the growth of seedlings, especially in the period of rhizome expansion, increase the amount of fertilizer, increase the application of phosphorus and potassium fertilizer, promote the rapid expansion of plant roots and increase the yield. Attention should be paid to clearing ditches and discharging stains in the rainy season to prevent rotting roots.

4. Pick the heart and dry the root

Radix angelicae dahuricae dahurica For the growing plants, the roots should be picked and dried from May to June in order to control their growth. When the stem tip forms an obvious growth point, the apical bud of the stem should be knocked off in the morning on a sunny day, and then watered and fertilized after 3-5 days. Angelica dahurica The purpose of root drying is to prevent plants from changing from vegetative growth to reproductive growth prematurely and avoid bolting.

5. Pull out early bolting seedlings

Early bolting seedlings not only affect the growth of other plants, but also the rhizome is easy to Lignification, poor powdery, quality and yield will decrease. Therefore, the seedlings of Angelica dahurica found in early bolting should be pulled out in time.

Fourth, give priority to prevention and strictly guard against diseases and insect pests

1. Disease

The main diseases of Angelica dahurica are spot blight and root-knot nematode disease.

① spot blight.

Symptoms: the main damage to plant leaves, the disease spot is polygonal, the initial dark green, and then gray-white, upper black spots. With the development of the disease, polygonal spots are gradually formed, which are hard and brittle and easy to break, which will cause the leaves to die seriously.

Control measures: the first is to keep the plants in the disease-free field as seeds; the second is to remove the diseased leaves at the initial stage of the disease and take them out of the field for centralized burning; the third is to spray carbendazim and other fungicides for control.

② root knot nematode disease.

Symptoms: mainly harm the rhizome of Angelica dahurica, affect its normal growth and expansion, and affect the growth of aboveground parts at the same time.

Prevention and control measures: one is to choose the land without root-knot nematodes to plant; the other is to rotate crops, preferably in flood and drought rotation, to avoid the use of pesticides.

two。 Insect pest

The main pests of Angelica dahurica are cabbage worm, yellow Phoenix butterfly, aphid, red spider and so on.

① cabbage worm, yellow butterfly, aphid.

It can be sprayed with indenyl and methomyl in larval stage for control.

② red spider.

It can be sprayed with alkyne acaroid for control.

Timely excavation and dry storage

Angelica dahurica First cut off the part of the ground, then dig up the root, shake off the soil, transport it back to air for 1 or 2 days, then remove the soil, cut off the residual leaf stem of the root, remove the fibrous root, remove the lateral root, pile it up and dry separately according to large, medium and small grades, and collect it in the evening to avoid being caught in the rain to prevent mildew.

If there are too many Rain Water in the harvest period and the quantity of the product is large, it can be dried in the baking room. When baking, we should pay attention to: first, put the head of the root down and tail up; second, put the root according to large, medium and small from bottom to top, and the lateral root is placed on the top floor, each layer is about 7 cm thick; the third is to keep the temperature in the baking room at about 60 ℃ until it is completely dried; fourth, do not turn it when baking, so as not to break the section. The dried Angelica dahurica is best with gray-white skin, white cross-section, fragrance, no black heart and no insect mildew. Generally, the yield of dry products per mu is 400 kg, and the high yield can reach 500 kg. Dried Angelica dahurica dahur

6. Select and retain improved varieties to improve seed quality

The selection of improved varieties is an important measure to prevent early bolting of Angelica dahurica. During the excavation and harvest in the second year, the seedlings with straight, disease-free and medium thickness of main roots should be selected and transplanted into deep, fertile and loose soil to strengthen fertilizer and water management and weeding. During the budding of Angelica dahurica in the third year, the inflorescences on the main stem and secondary and tertiary branches were cut off, and nutrients were concentrated for the growth of primary branch inflorescences, so as to ensure the consistent development and maturity of seed embryos and reduce the differences between seed individuals. After the seeds are ripe, the seeds will be harvested in batches.