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Key Technical Points for Seed Treatment in Artificial Cultivation of Licorice
Licorice seeds have a hard seed coat and poor water absorption, with a germination rate of only 4-6%. Grinding or sulfuric acid treatment is needed 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, mix evenly with 20-30 mL of 80% sulfuric acid. Once uniform sulfuric acid etching marks are visible 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, higher temperatures require shorter treatment time, while lower temperatures require
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Control Methods and Technical Key Points for Licorice Brown Spot Disease
Brown spot disease is an infection caused by a type of imperfect fungus (Deuteromycete), mainly damaging the leaves. Its symptoms are: circular or irregular lesions appear on the leaves, the center of the lesion is grayish-brown, the edge is brown, and black mold-like growth occurs on both sides of the lesion. Control methods: spray 1:1:100-1:1:160 Bordeaux mixture or spray 70% thiophanate-methyl wettable powder at 1500x-2000x dilution.
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Detailed Explanation of Key Techniques for High-Yield Cultivation of Licorice
Licorice, also known as sweet grass root, is a medicinal plant of the Fabaceae family. Its roots and rhizomes are used as medicine, and it has the effects of tonifying the spleen and boosting qi, clearing heat and detoxifying, moistening the lungs and stopping cough, and harmonizing all medicines. Licorice prefers a dry climate and tolerates severe cold. It is suitable for planting in sandy soil with deep soil layers, good drainage, a relatively low groundwater table, and rich calcium content. The soil should preferably be neutral or slightly alkaline. Waterlogged lowlands, land with a high groundwater table, and acidic soil are not suitable for planting. Licorice is generally propagated by rhizomes. After harvesting licorice in autumn or spring, the thick roots are used as medicine, and fine
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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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Key Points on Harvesting and Processing Techniques for Licorice (Part Three)
For licorice propagated from seed, harvest in the 4th year; for licorice propagated from rhizomes, harvest in the 3rd year. Harvesting can be done either before Grain in Ear (Mangzhong) or after White Dew (Bailu), but harvesting after White Dew is preferable. After digging them up, cut off the branches and twigs while fresh, sun-dry until half dry, tie into small bundles separately according to thickness, and sun-dry until completely dry. Quality specifications for dry goods: cylindrical in shape, thick at the top and thin at the bottom with no reed head, surface purplish-red or grayish-brown, rough skin, loose and light in texture, cross-section yellow-white, starchy, sweet in taste, free from impurities, insect damage, and mildew. Grade One: length over 60 cm, diameter over 1
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Detailed Guide to Harvesting and Processing Licorice Root (Part Two)
For seed propagation, harvest after 3 to 4 years; for rhizome and division propagation, harvest after 2 to 3 years. Digging can be done from late autumn to early winter and before spring sprouting. Those dug in autumn are the best, with a high glycyrrhizic acid content and a firm texture. After the licorice is dug out, clean off the soil, remove the stem base, branches and fibrous roots, cut into sections of appropriate length, sun-dry until half dry, tie into small bundles, then sun-dry until completely dry.
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Detailed Explanation of Licorice Harvesting and Processing Methods (1)
Key Technical Measures for High-Yield Cultivation Choose fertile, loose-textured, well-drained sandy loam soil for planting. Treat the seeds before sowing to improve the germination rate, water the seedlings to keep them alive, and apply sufficient phosphorus and potassium fertilizer every early spring. Harvesting and Processing 1. Harvesting Licorice propagated from seed generally grows for 4 years after sowing, while that propagated from rhizomes can be harvested after 3 years of growth. Harvesting in autumn each year is best. When harvesting, dig up the licorice roots and rhizomes, shake off the soil, and set them aside for processing. 2. Processing Method Dig
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Harvest Time and Processing Methods for Licorice
The harvest time is generally late autumn to early spring, and it is best after the leaves have fallen and withered in autumn. The licorice roots harvested at this time are firm in texture, heavy in weight, high in powder content, and strong in sweetness. Remove the soil from the dug-up licorice (washing with water is strictly prohibited). While still fresh, use a fodder chopper or a sharp knife to cut off the branch roots from the head and root portions close to the main root. Divide them into first and second grades according to the diameter of the root head, and mao cao. Generally, dried goods with a thick head diameter of more than 1.5 cm are first grade, those with a diameter of 0.3-1.4 cm are second grade, and those smaller than 0.5 cm are placed in mao cao. For first and second grade licorice, the root strips must not be shorter than
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Licorice Disease Prevention and Control Methods and Key Technical Points
(1) Rust disease: When infected, yellowish-brown scar-like lesions appear on the underside of the leaves. After the epidermis ruptures, brown powder is released; this is the uredinium of the pathogen. From August to September, dark brown telia form, causing the leaves to turn yellow and wither, and in severe cases to fall off. Control methods: Apply more phosphorus and potassium fertilizer to improve the plant's disease resistance. Remove diseased plant debris and burn it in a centralized manner. At the early stage of the disease, spray with 15% triadimefon at 1000 times dilution, or 97% diniconazole at 400 times dilution. (2) Brown spot disease: It damages the leaves, and affected leaves develop round or irregular lesions. The
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Key Technical Points for Large-Scale Cultivation of Licorice with High Quality and High Yield
Field Management 1. Intertillage and weeding: After the seedlings emerge completely, intertillage and weeding should be carried out promptly so that there are no weeds in the field. For ridge planting, three hoeings and three ridgings can be done; for bed planting, weeds on the bed surface should be pulled out. This is the key to high quality and high yield. Where conditions permit, closed weeding can be carried out after sowing and before seedling emergence, using Douhuanglong (20% chlorimuron-ethyl) wettable powder 2 bags/mu mixed with acetochlor 2-4 bottles/mu and sprayed over the field. After seedling emergence, herbicides killing monocotyledonous plants can be sprayed to eliminate weeds.
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