How to pick licorice?
It is better to dig licorice seedlings in 2-3 years, and the best quality is in autumn. Before digging, the stems and leaves can be cut off and used as livestock feed. Then use subsoiling machine or licorice digging special plow to dig, try to prevent damage to the root bark and premature root cutting. Excavated roots shake clean soil, do not wash with water, take advantage of fresh to remove residual stems, roots, cut off the root head, according to the thickness of the root into grades, roots can not be shorter than 20 cm. Cut the licorice into sections, grade and dry. Drying licorice should pay attention to rain prevention, and the yard is pollution-free. When licorice drying to half dry, bundle into a diameter of about 10 cm small bundle, continue to dry until completely dry. Generally, the yield of dry licorice in 1-year raw water is 250-300 kg per mu;2-year growth can reach 400-550 kg.
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What are the characteristics of the ecological environment in which licorice grows?
Licorice is widely distributed in the warm temperate and cold temperate continental monsoon climate regions of arid and semi-arid regions in northern China. The annual average temperature for growth is between 3-10 ℃, and the altitude is in the range of 250-1400m. Licorice is an indicator plant of calcareous soil in dry areas of China, and its requirements on soil quality are not too strict. No matter sandy soil, light soil, heavy soil and clay can grow, and the sand-covered loam with sand in the upper layer grows best. Licorice has strong cold and drought resistance, and the absolute lowest temperature can reach-47 ℃.
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Seed treatment techniques of artificial planting of Glycyrrhiza uralensis
Licorice seed coat is solid, water absorption is poor, the germination rate is only 4-6%, need to be milled or sulfuric acid treatment, break the seed hard state, improve the germination rate and emergence rate. 1. Sulfuric acid treatment. Stir the pure seeds with 20-30 milliliters of 80% sulfuric acid per kilogram. See that the seed coat has uniform marks of sulfuric acid etching, then rinse with clean water and dry for use. The time of seed treatment is related to the temperature and the amount of acid added. In the case of the same amount of acid, the treatment time is short when the air temperature is high, and the treatment time is long when the air temperature is low. Acid addition amount
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