Where is licorice from?

Licorice is a kind of beneficial Chinese herbal medicine, which grows in arid and semi-arid sand, desert edge and loess hilly areas, and is easy to breed in the fields and beaches of the Yellow River irrigation area. It has strong adaptability and strong resistance. The following editor will introduce the origin and distribution of licorice for you.

I. the producing area of licorice

Artificial cultivation of licorice is mainly produced in Xinjiang, Inner Mongolia, Gansu Hexi Corridor, the periphery of Longxi and some areas of Ningxia. Wild licorice is mainly distributed in Xinjiang, Inner Mongolia, Ningxia, Gansu, Shuozhou, Shanxi and so on. In addition, it is distributed in other countries in Asia, Europe, Australia and America (and most of them have traditional medicinal and other uses).

2. Cultivation techniques of licorice.

1. Soil selection

The cultivation of licorice should choose the sandy soil with a groundwater level below 1.50m, a good drainage condition, a soil thickness of more than 2m, no consolidation layer, a PH value of about 8 and convenient irrigation. It is best to turn the land in autumn, or in spring if it is too late, but you must ensure the soil moisture, break the bumps and flatten the ground, otherwise it will affect the whole seedling.

2. Seed treatment

Improved varieties are the internal factors to capture the high yield of licorice. Ural Glycyrrhiza uralensis and Glycyrrhiza uralensis are generally selected as the leading varieties in our county. For those who use seeds as sowing materials, the seeds are milled with an electric rice mill before sowing, or the seeds are weighed in a ceramic pot, mixed with 1 kg of seeds and 30 ml of 80% concentrated sulfuric acid, stirred repeatedly with smooth sticks, soaked for 7 hours at 20 ℃, then washed with clean water for many times and dried, the germination rate can reach more than 90%.

3. Sowing seeds

Licorice can be sown in spring, summer and autumn, and it is best to sow in May in summer, when the temperature is higher, seedlings emerge quickly, and there is a longer growth period before winter. Before sowing, 4000 kg / mu of high quality farm manure and 35 kg / mu of diammonium phosphate were used as base fertilizer. If sowing seeds, the better sowing method could be strip sowing or hole sowing. The sowing rate was 2.50kg / mu, the row spacing was 30ml / mu, the plant spacing was 15cm, the sowing depth was 2.50kg / mu, and there were 5 seeds per hole. After sowing, the soil was covered with rake to conserve soil moisture.

3. Field management

(1) fertilization: 25kg / mu of diammonium phosphate was applied before seedling germination in spring in the second and third years. And trench application in the row side 10 cm deep, ditch depth of 15 cm, cover soil after fertilization.

(2) Irrigation: in the sowing year, irrigation was carried out for 3 times, usually 85 cubic meters per mu. The first irrigation was carried out about one month after seedling emergence, and then once every other month. Overwintering water was applied in the middle of October, and the irrigation times could be gradually reduced in the second, third and fourth years.

(3) seedlings: when licorice seedlings grow to 15 cm high, seedlings can be carried out, plant spacing of 15 cm, about 20,000 seedlings per mu.

(4) Intermediate ploughing and weeding: intertillage is generally ploughed for 4 times in the sowing year, and then the number of intertillage can be appropriately reduced, combined with intertillage to mainly eliminate dodder and other field weeds.

5. Pest control

In the production of licorice, ground tiger and golden needle worm are the most common pests, and powdery mildew is the most common disease, both of which are the main causes of yield reduction. The control methods have been mentioned before and emphasized here for attention. Other diseases and insect pests can be controlled symptomatically.

6. Seed collection

If the artificial planting and cultivation must be collected year after year, the large and full seeds can be obtained by removing the flowers and fruits near the branch tip during the flowering and podding period. The seed collection should be in the pod when the seed changes from green to brown, that is, the middle stage of setting grain size is the best, when the hard seed rate is low, the treatment is simple, and the emergence rate is high. The time of seed collection should not be early, otherwise the germination rate of seeds will be affected after sowing, resulting in lack of seedlings and broken ridges.

As licorice is suitable to grow in a dry and ventilated environment, its producing area is mostly distributed in the arid areas where Rain Water is less.