How to choose licorice seeds? What are the breeding methods?

Licorice, also known as Sweet Grass Root, Red Glycyrrhiza uralensis, Glycyrrhiza uralensis, etc., is a perennial herb of Leguminosae Glycyrrhiza uralensis, is a common tonic Chinese herbal medicine. In recent years, as people pay more and more attention to health, licorice is widely used in all kinds of drugs, the market demand is increasing year by year, and the number of farmers planting licorice is also increasing, so how to choose licorice seeds? What are the methods of raising seedlings? Next, let's have a look with the editor.

First, how to select licorice seeds?

Licorice seeds should be fresh and full, stored for too long or moldy seeds should be eliminated. Before sowing, mix the seeds with 1 kg of seeds and 30 ml of 80% concentrated sulfuric acid, stir repeatedly with smooth sticks, sow the seeds at 20 ℃ for 7 hours, then rinse with clean water many times before drying.

What are the seedling raising methods of licorice?

1. Soil selection

The cultivation of licorice should choose sandy soil with groundwater level below 1.50 meters, good drainage conditions, soil thickness more than 2 meters, no consolidation layer, PH value about 8, convenient irrigation, break bumps and flatten the ground.

2. Sowing time

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.

3. Sowing and raising seedlings

Before sowing licorice, 4000 kg of high-quality farm manure and 35 kg of diammonium phosphate per mu were applied as base fertilizer, which could be sown by strip or hole, with row spacing of 30 cm, plant spacing of 15 cm, sowing depth of 2.5 cm, and 5 grains per hole.

4. The seedlings are fixed

When licorice seedlings grow to 15 cm high, the number of seedlings per mu is generally about 12000-15000. If the sowing row spacing is 30 cm, the plant spacing can be kept at 18.5-20 cm.

5. Rational irrigation

Licorice should always keep the soil moist before and after emergence to facilitate seedling emergence and seedling growth. Specific irrigation should depend on soil type and salinity. The key to the cultivation of licorice is to protect the seedlings. Generally, the plants will not be watered after they grow up.

6. Ploughing and weeding

Weeding in licorice is generally carried out in the year of emergence, especially in the seedling stage, the root of licorice begins to tiller from the second year, it is difficult for weeds to compete with it, and there is no need for weeding.

7. Rational fertilization

Licorice should be fertilized with sufficient base fertilizer before sowing, and barnyard manure is better. In the sowing year, phosphate fertilizer can be applied in early spring and 2000kg / mu organic fertilizer can be applied per mu before freezing in winter. Because licorice root has the effect of nitrogen fixation, nitrogen fertilizer is generally not applied.

The above is the introduction of licorice. Licorice seeds can be harvested after 3-4 years of propagation and 2-3 years of rhizome propagation. They can be dug when the aboveground stems and leaves wither from late September to early October in autumn, and can also be dug before licorice stems and leaves are unearthed in spring, but the mining quality is better in autumn.

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