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Pinellia ternata cultivation techniques (part two): detailed planting methods
(1) Propagation methods Pinellia ternata is mainly propagated by tubers and bulbils, and can also be propagated by seeds. ① Tuber propagation After Pinellia ternata has been cultivated for 2 years, the underground tubers can be dug up after the stems fall over in June, August and October each year. Select small tubers about 0.5 cm in transverse diameter that are robust and free from pests and diseases as seed. Mix the seed tubers with semi-dry, semi-moist fine sandy soil, store them in a ventilated and cool place, and take them out for planting in the winter of the same year or the spring of the next year. Planting in the spring of the next year is preferable. With a row spacing of 15 cm, open furrows 10 cm wide and about 5 cm deep, and arrange two staggered rows in each
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How to grow Pinellia ternata? Detailed cultivation techniques for Pinellia ternata (Part 1)
(1) Site selection and land preparation: Choose loose, fertile, neutral sandy loam soil with strong water and fertilizer retention capacity; it can also be intercropped under orchards or tall crops such as corn. Plow the soil in winter to let it weather and mature. In early spring, level the land, apply 30000 kg of barnyard manure or compost and 750 kg of superphosphate per hectare, then rake fine and level to make high beds 1.3 m wide with furrow width of 40 cm. (2) Propagation: Generally, tuber or bulb propagation is the main method; seed propagation is also possible, but the seed germination rate is low and the production cycle is long
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Detailed Explanation of the Biological Characteristics of Angelica sinensis (Part One)
Angelica sinensis seeds lose their germination rate after being stored at room temperature for 1 year, but can be stored for more than 3 years under low-temperature dry conditions. Mature seeds can germinate and grow under suitable conditions of moisture, temperature, oxygen, etc. Seed germination goes through three processes: (1) The water absorption and swelling process. The components that make up Angelica sinensis seeds, such as starch, fat, protein, and cellulose, are all hydrophilic colloids, which exist in a gel state under dry conditions. When the seeds absorb water, water penetrates into the colloidal network structure inside the seeds, causing the gel state to become a sol state, and the volume increases accordingly. This process is a physicochemical phenomenon called the seed water absorption and swelling process.
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Detailed Explanation of the Biological Characteristics of Angelica sinensis (Part Three)
(1) Bolting and flowering. Angelica sinensis is a monocarpic plant. Under normal cultivation conditions, it enters the bolting and flowering stage in the third year. About half a month after the plant turns green again, the growing point begins to shift from the vegetative growth state to the reproductive growth state, forming a reproductive growing point, and some protrusions gradually appear at its apex, namely the inflorescence primordia. As the inflorescence primordia elongate and grow, the tip of each primordium begins to widen and produces several small protrusions, namely the umbellule primordia. After the umbellule primordia elongate, they form the rudiment of a compound umbel. At the same time, the basal stem swells and lengthens, forming internodes and constituting
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What are the biological characteristics of Angelica sinensis? (Part Two)
(1) Root growth. From sowing to physiological maturity, Angelica sinensis takes three years, overwintering twice, with a total growth period of more than 500 days. After the seed germinates, the radicle elongates rapidly and grows downward in a curved manner, entering the soil. First, one main radicle emerges. When the main radicle extends to 3-4 cm, first-order lateral roots begin to form, and then second-order lateral roots appear on the first-order lateral roots. The main root continues to thicken and elongate and gradually becomes fleshy, forming a typical fleshy taproot system 20-30 cm long and 0.3-0.5 cm in diameter. In April of the following year
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Key Harvesting and Processing Techniques for Angelica sinensis (Danggui) (Part One)
(1) Harvesting For direct-sown plants, dig in mid-to-late October of the second year; for seedlings raised in a nursery and then transplanted, dig in mid-to-late October of the same year, when the plants have withered and turned yellow. Digging too early results in roots that are not plump and solid, with low yield and poor quality; digging too late means the soil has already frozen, making digging difficult and prone to breaking the roots. Before harvesting, first cut off the above-ground stems and leaves and sun-dry them for 3-5 days, so that the roots become fuller and more solid; then carefully dig out the entire root. (2) Processing After harvesting, angelica sinensis must not be piled up. First clean off the soil, choose a high, dry, well-ventilated spot, spread the roots out to dry until the roots become soft, or sort them
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Detailed Explanation of Angelica sinensis Harvesting and Processing Techniques (Part 3)
For autumn direct-seeded plants, harvest in the second year; for transplanted plants, harvest in late October of the same year, when the plants turn yellow and withered. Dig up the whole plant, shake off the mud and sand, and air-dry for 2-3 days until the roots become soft. Then remove the stems, leaves and fibrous roots, sort them by root size, tie them into small bundles, hang them head-down on the curing rack, and smoke and roast them slowly with smoke and fire. During smoking, pay attention to indoor ventilation and turn them frequently. After drying, rub off the fine hairs and fibrous roots, and they are ready as a commercial product. Generally, 667 sq m can produce about 150 kg of dried product. High-yield fields can reach 400 kg.
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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 Guide to Herbicide Application Techniques in Licorice Fields (Part Two)
Weeds can severely affect the yield and quality of licorice, competing with licorice for sunlight, water and nutrients. Some weeds are also intermediate hosts for licorice crop pests and diseases, helping pests and diseases spread and transmit. Especially for artificially cultivated licorice at the seedling stage, if weeds are not removed in time, a large number of seedlings will die, or even the entire crop will be destroyed. Now, in addition to manual weeding, chemical herbicides are often used for weed control. In our county, the following 3 chemical herbicides are currently promoted for artificially cultivated licorice: acetochlor, pendimethalin, and doucaote. Practice has proved that using chemical herbicides for weed control is the guarantee
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