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What are the varieties and types of licorice?
1. Licorice (Glycyrrhiza): The root is cylindrical, 30-120 cm long, 0.6-3 cm in diameter. The outer bark varies in tightness, red-brown, dark brown or grayish-brown, with obvious wrinkles and furrows, commonly known as "drawn furrows and sunken ridges," with sparse fine rootlet scars. The lenticels are transversely elongated, and the cut surfaces at both ends are slightly sunken in the center. The center of the cut section shrinks to about the size of a pepper eye, called "pepper eye." The texture is solid and heavy, the fractured surface is fibrous, yellow-white, starchy, with obvious cambium ring markings and radial striations, and fissures. The rhizome surface has bud scars
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Key Technical Points for Seed Treatment in Cultivated Licorice
Licorice seeds have a hard seed coat and poor water absorption, with a germination rate of only 4-6%. They need to be treated by milling or sulfuric acid to break the hard-seeded state and improve the germination rate and seedling emergence rate. I. Sulfuric acid treatment method. For each kilogram of clean seeds, use 20-30 milliliters of 80% sulfuric acid and stir evenly. Once uniform sulfuric acid etching marks appear on the seed coat, rinse with clean water and dry in the sun for later use. The treatment time depends on temperature and the amount of acid added. With the same amount of acid, a high temperature means a short treatment time, and a low temperature means a long treatment time. The more acid added,
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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 zones of the arid and semi-arid regions of northern China. The suitable average annual growing temperature is between 3 and 10°C, and the altitude range is 250 to 1400 m. Licorice is an indicator plant of calcareous soils in the dry regions of China. Its requirements for soil are not very strict: it can grow in sandy loam, light loam, heavy loam and clay, and it grows best in sandy-covered loam with a sandy upper layer. Licorice has extremely strong cold resistance and drought tolerance; at an absolute minimum temperature of -47°C it still
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What are the control methods for licorice rust disease?
① Pathogen The pathogen of licorice rust (Uromyces glycyrrhizae) belongs to Basidiomycota → Teliomycetes → Uredinales → Pucciniaceae → the genus Uromyces. ② Disease pattern a. Urediniospore stage In the seedling stage of licorice, infected plants show a light brown uredinium at the tip of leaves that have not yet unfolded. As the young leaves flatten and grow, the spore masses appear densely along the leaf tip and the underside of the leaf, and finally the entire underside of the leaf is covered by spore masses, appearing as a sheet of yellow rust color; generally all leaves of the whole plant become diseased, and diseased plants are noticeably dwarfed.
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Detailed Guide to Seed Selection and Seed Treatment Methods for Licorice
Seed selection: Ural licorice (Glycyrrhiza uralensis), which has higher levels of glycyrrhizic acid and glycyrrhetinic acid, was chosen. Seed treatment: licorice seeds have a hard seed coat that is impermeable to water and air, making them difficult to germinate. Untreated seeds have a germination rate of only 30%-40%, while seeds treated by breaking the seed coat can reach a germination rate of over 90%, so the seeds must be pre-treated before sowing. The method used is: soak the seeds in water at 60°C, then remove them, cover them with a damp cloth for 4 hours to 6 hours to let them absorb water and swell, then air-dry and drain them before sowing.
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How to control licorice aphids? Master these methods
They damage tender leaves, tender shoots, flowers and fruits. Adults and nymphs suck plant sap; in severe cases they can cause leaves to turn yellow and drop, affecting seed set and marketable yield. Control methods: ① Avoid planting next to leguminous plants. ② During the occurrence period, spray with 40% dimethoate emulsifiable concentrate at 1000 times dilution.
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Licorice Star Fruit
This product belongs to the preserved fruit category. The raw material used can be dried star fruit or salted star fruit pips. The processing technique is as follows: 1. Raw material handling: Dried star fruit should be soaked in water for about 1 hour, the purpose being to let the dried product rehydrate to a semi-dry state so that it can rapidly absorb the liquid. If it is a semi-finished salted pip, it should be soaked in water for desalting; the desalting degree can retain 1-2% salt content, then take it out and dry it to a semi-dry state for later use. 2. Liquid preparation: 10 kg of dried tangerine peel, soak in a large amount of clean water to remove the bitterness, or boil for 10 minutes and then soak in water,
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Detailed Explanation of Key Techniques for Licorice Seedling Raising and Transplanting
Licorice is an important medicinal herb. With the strengthening of national ecological and environmental protection, the use of wild resources has become very limited, and licorice seedling raising and transplanting techniques have become very important. Licorice is a perennial herbaceous plant of the Fabaceae family and is listed by the state as a key specially controlled medicinal herb. As a sweetener, glycyrrhizic acid is 200-300 times sweeter than sucrose and is the best natural sweetener discovered to date. The state has explicitly designated licorice as a national Class II protected plant, and random digging is not permitted, which has intensified the contradiction between supply and demand of licorice. Therefore, research on artificial cultivation and high-yield, high-quality cultivation techniques is of great significance.
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Detailed Explanation of Licorice Cultivation Techniques and Methods
Licorice is a perennial herbaceous plant of the Fabaceae family, and the medicinal parts are the root and rhizome. It contains 5-11% triterpenoid compounds, glycyrrhizin, followed by flavonoid compounds such as liquiritin, liquiritigenin, isoliquiritin, isoliquiritigenin, etc. It is neutral in nature and sweet in taste, harmonizes the middle and relieves acute conditions, moistens the lungs, removes toxins, and harmonizes all medicines, making it an indispensable herb in many traditional Chinese medicine prescriptions. (1) Site selection and land preparation. Licorice prefers arid climates and is suited to sandy loam with deep soil layers and a low groundwater table, which can achieve high starch content, less fiber, strong sweetness, and good quality.
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Detailed Explanation of Licorice Propagation Methods and Cultivation Management Techniques
Propagation methods: use seeds, rhizomes, and division propagation. 1. Site selection and land preparation: sandy soil and loose red loam soil are suitable; apply 2500 kg of farmyard manure per 667 sq m, deep plow 40-50 cm in autumn, rake fine and level, and make high ridges with a ridge width of 40-50 cm and a ditch width of 30-35 cm. 2. Seed propagation: because licorice seed coats are hard and thick, making emergence difficult, before sowing mix crushed glass with an equal amount of seeds and grind for half an hour, giving a germination rate of about 85%; or use 3 times the seed volume of
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