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Cultivation Timing and Management Key Points for Licorice
I. Seed Germination Habits (I) Water Absorption and Germination of Licorice Seeds Licorice seeds have a low emergence rate, generally around 10%, so they must be treated before sowing. Untreated seeds absorb water very slowly, and most seeds do not imbibe; seeds treated with concentrated sulfuric acid absorb water very rapidly, reaching over 100% within 4 hours. Generally, once water absorption exceeds 100%, the seeds have a very uniform germination capacity. If water absorption differs, the germination rate differs accordingly. At 20°C, after absorbing water for more than 1.5 hours, the germination rate reaches over 80%, at which point the moisture content is about 95
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Cultivation Techniques and Field Management Methods for Licorice
Licorice is a perennial herbaceous plant of the Fabaceae family, and the medicinal parts are the roots and rhizomes. 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 urgency, moistens the lungs, detoxifies, and harmonizes various medicines, making it an indispensable herb in many traditional Chinese medicine prescriptions. (1) Site selection and land preparation. Licorice prefers arid climates and is suitable for sandy loam soil with deep soil layers and a low groundwater table, which can achieve high starch content, low fiber, strong sweetness,
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Detailed Explanation of Key Techniques for Licorice Seedling Cultivation and Transplanting
The licorice seedling cultivation base requires good irrigation conditions, level plots, and fertile soil. There is no limit on plot size; seedlings can be grown in open fields or developed in courtyards. Sowing can be done anytime from April to August each year, with 10 kg of treated seeds sown per mu. Drill sowing is used, with a row spacing of 15 cm, and 120,000 to 150,000 seedlings are maintained per mu. Licorice sown in spring is transplanted in the spring of the following year, while licorice sown in summer and autumn is transplanted in the spring of the third year. The transplanting row spacing is 35 cm, the trench depth is 8 to 10 cm, and the plant spacing is 8 to 10 cm. The flat planting method is used, with
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Detailed Explanation of Key Techniques for Licorice Seedling Raising and Transplanting
Licorice is a perennial herbaceous plant of the Fabaceae family, also known as sweet herb, and is widely used medicinally. I. Morphological Characteristics: Plant height 50-120 cm. The root is thick and large, cylindrical, reddish-brown, with horizontal rhizomes. The stem is upright, with pinnate compound leaves, alternate, 5-17 leaflets, ovate or elliptical; flowers are papilionaceous, light purplish-red. The pod is curved, sickle-shaped, with external bristles. Seeds are round, brownish-green, with a 1000-seed weight of 11.93 grams. Flowering period is July-August, and fruiting period is August-October. II. Growth Characteristics: Licorice is mainly distributed in the "Three North" regions of China, and has
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How to grow licorice seedlings? Master these key seedling cultivation techniques
Choose sandy soil and loam with a low groundwater table and deep soil layer, but it must be irrigated land. When the ground surface temperature reaches 15°C, apply 3000 kg of farmyard manure per mu, plus 40 kg of American diammonium or nitrophosphate, then deep plow 40-50 cm. Deep plowing is essential (otherwise the seedlings grown will have short roots and many branches, mostly failing to meet the specified quality standards). Make a flat seedbed and water once, with the amount of water bringing the soil to the black moisture state (that is, when you grab a handful and throw it down, it does not crumble but holds together like a cake). After three to five days, shallow plow once more, then you can open furrows and sow. Follow the drilling method for seedling cultivation, with a row spacing of 2
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Key technical points and precautions for transplanting licorice
Generally, it is done in late autumn or early spring. In late autumn, before the land freezes; in early spring, around Qingming Festival, and no later than mid-April. The transplanting field should be prepared on the basis of autumn plowing from the previous year by making beds (bed width depends on a row spacing of 50 cm and how many rows are planted in the bed), then applying fertilizer. Dig up the seedlings grown the previous year after the ground at the field corners thaws, remove the aboveground parts and the lower growing points, and set them aside for use. In the prepared field, open furrows at a row spacing of 50 cm, 12 cm deep, then place the seedlings flat at the bottom of the furrow, with the heads placed obliquely toward the inner slope, at a slope of 10 degrees. When placing the seedlings, 2 rows
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How to prevent and control licorice rust? Detailed explanation of prevention and control methods
The pathogen is a basidiomycete fungus, mainly affecting the leaves. On the underside of infected leaves, yellow-brown blister-like lesions appear on one side; after the epidermis ruptures, brown powder is released, which are the uredinia and urediniospores of the pathogen. From August to September, dark brown teleutosori form. Prevention and control methods: 1. Collect diseased plant leaves and burn them. 2. At the early stage of disease onset, spray 0.3-0.4 degrees Baume lime sulfur mixture or 97% dithianon sodium 400-fold solution.
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Morphological Characteristics of Licorice and Introduction to Suitable Growing Conditions
[Morphological Characteristics]Licorice is a perennial herb, 30-100 cm tall. The whole plant is covered with short white pubescence and glandular hairs. The above-ground stem is erect, woody at the lower part, with angular, green branchlets. The leaves are alternate, odd-pinnately compound. The leaflets are in 3-8 pairs, ovate or ovate-elliptic, with entire margins, and the terminal leaflet is larger. The inflorescence is a raceme, axillary, with very short pedicels, an ovate bracteole below the base, a bell-shaped green calyx, and a papilionaceous corolla in purplish-red or blue-purple. The fruit is a legume, narrowly rectangular, curved into
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Key Technical Points for Field Management in Licorice Cultivation
Thinning and Final Thinning: In the year of direct sowing, thin the seedlings when they are about 6 cm tall, with a plant spacing of 10-15 cm; in the second year, maintain a plant spacing of 30 cm for final thinning. Cultivation and Weeding: After licorice is planted, weeds must be removed frequently in the first year, and the soil should be loosened in a timely manner. Soil loosening should go from shallow to deep, and herbicides can also be used for weed control. By the second year, once the plants have grown larger, weeds can hardly grow, so cultivation and weeding may no longer be necessary. Topdressing: In addition to applying base fertilizer at sowing or planting, during each year's growing period, phosphorus and potassium fertilizer can be applied as topdressing in early spring, with plant ash or compost applied per mu.
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Detailed Explanation of the Biological Characteristics and Growth Habits of Licorice
1. Biological characteristics (1) Flower size and seed characteristics. Due to different habitats, licorice naturally forms three ecotypes, namely sandy-land licorice, ridge-land licorice and floodplain licorice. The flowers of different licorice ecotypes are similar in size, but the seeds differ markedly in size, in the order floodplain licorice > ridge-land licorice > sandy-land licorice; the hard seed rate is ridge-land licorice > sandy-land licorice > floodplain licorice. Licorice grown from seed generally flowers and sets seed after 3 years. (2) Distribution characteristics of roots and rhizomes. Sandy-land licorice
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