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Control Methods and Technical Key Points for Angelica Root Rot
Angelica root rot, also known as root decay disease, is one of the main diseases during the growth and development period of angelica (Angelica sinensis), greatly affecting its yield and quality. 1. Damage symptoms: It harms roots and stems. The root tissue of affected plants initially turns brown, then rots into a water-soaked state, leaving only a fibrous hollow shell. The stem becomes brown and water-soaked, aboveground growth stops, and the plant becomes stunted. Elliptical brown patches appear on the leaves; in severe cases, the leaves wither, turn yellow, droop, and even the entire plant dies. 2. Pathogen: (Fusarium avenaceum (
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Storage Methods and Precautions for Angelica sinensis
Angelica sinensis contains volatile oil and is rich in sugars, making it highly prone to oil loss and moisture absorption. During storage, if the temperature is too high, the time too long, or it is exposed to air for an extended period, its oil tends to seep out, causing oily stains on the surface of the medicinal material, leading to deterioration, rot and oil loss; if the humidity is too high or the material itself has a high moisture content, it is prone to insect damage and mold. Therefore, after drying, Angelica sinensis should be stored in a dry, cool place, and disinfection work should be carried out carefully. The stored Angelica sinensis should be clean and dry, with a moisture content below 13%, free of mold and insect damage. Use double
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Detailed cultivation techniques for Angelica sinensis: master the planting and management methods
Angelica sinensis is propagated by raising seedlings from seed and then transplanting. In lower-altitude areas (1500-1800 m), there is also autumn direct sowing harvested the following year, or spring direct sowing harvested the same year, but the yield and quality are lower. For the seedling bed, choose a cool and moist shaded slope or semi-shaded slope, a hollow or small basin that retains water but does not become waterlogged, rather than a dry, wind-swept ridge. The soil should be loose and fertile, free of stones, either large dark soil or black oil sand; generally, virgin wasteland is chosen for raising seedlings. On the leveled plot, make high beds 1 m wide, and in mid-to-late June, while the soil is moist, spread the seeds
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Detailed Explanation of Methods for Site Selection, Land Preparation, and Transplanting of Angelica sinensis
(1) Site selection and land preparation The seedling-raising plot should be chosen as a cool, fertile, and moist virgin wasteland or previously cultivated land, with loose, fertile sandy loam being preferable; the cultivation plot should be chosen as fallow land or secondary wasteland with deep soil layers. In mid-July, first cut down shrubs and weeds, spread them on the ground, and burn them, then deep-plow the land more than 25 cm, and let it weather and mature under the sun. Then, before planting, while preparing the land, apply 37,500 kg of decomposed stable manure per hectare and plow it into the soil as base fertilizer. Before sowing, shallow-plow once more and make raised beds 1.3 m wide, with furrow width 30 cm and bed height about 25 cm
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Detailed Explanation of Sexual Propagation Methods and Technical Key Points for Asarum
For sexual propagation, both drilling and broadcasting can be used, with broadcasting being better. When seeds are freshly collected, the germination rate reaches 96%; after dry storage for 20 days it is 81%; for 40 days it is 29%; for 60 days it is only 2%. Therefore, after the seeds mature and are harvested in June-July, they should be sown immediately. If sowing cannot be done for some reason, mix 3 parts wet sand with 1 part seeds evenly, then bury them in a shaded place to maintain appropriate moisture, but sowing must not be later than the end of July; if too late, root growth will be affected. About 5 kg of fresh seeds are needed per mu. Broadcasting: forest intercropping seedling raising mostly uses broadcasting. Because its soil is loose and fertile,
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Propagation Methods and Key Cultivation Management Techniques for Asarum
Propagate by seed and by division. 1. Site selection and land preparation: Choose sandy loam soil with deep soil layers, rich humus, and good drainage. It is best to choose open woodland on slopes within 30°. Apply 2500-5000 kg of farmyard manure per 667 sq m as base fertilizer. In the autumn of the previous year, plow deeply 25-30 cm, then plow again in spring, level and refine the soil, and make high beds 1.2 wide. 2. Seed propagation (1) Seed collection: The fruit is mature when it turns from purple-red to pinkish-white and the flesh is soft. Collect as they ripen, and after collecting, place them in clean water and rub off the fruit skin, remove the seeds, and sow them after they are slightly dry. Seed collection
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What are the pre-sowing treatment methods for Panax notoginseng seeds?
Panax notoginseng seeds do not store well. If longer storage is needed, storage in moist sand is best, but no more than 90 days is advisable. Mix 1.5% polyoxin at 200 times dilution + 58% ridomil at 500-800 times dilution + 70% thiophanate-methyl at 800 times dilution evenly, put the seeds in, soak for 20-30 minutes, then remove and air-dry and sow with the pesticide coating. Note that during soaking the liquid must completely submerge the seeds.
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How to make beds in a Panax notoginseng seedling field? Methods and key technical points
After the shed is built, plow and harrow the land once more, then make the beds. On flat land and gently sloping land, the bed height is 20-25 cm; on sloping land, the bed height is 15-20 cm, and the bed width is 1.2-1.4 m. Apply 3000-4000 kg of base fertilizer per mu, with poultry and livestock manure accounting for 30%-40% and plant ash accounting for 60%-70%. The base fertilizer must be fully fermented and decomposed, broken up finely, and spread evenly over the bed surface, then turned into the 6-10 cm soil layer of the bed with a shovel.
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Methods for Selecting and Preparing Land for Notoginseng Seedling Beds
Choose a shady slope on the back side, with a gradient of about 5°-10°, well-drained soil, loose texture, and a granular structure of red soil or brown-red soil. A slightly acidic soil with a pH of 5.5-7.0 is suitable, while heavy clay soil easily causes root rot and should not be used. Plow the land multiple times 2-3 months before sowing to a depth of 30 cm to let the soil weather, and at the same time thoroughly remove weeds, tree roots, and stones. In conjunction with plowing, apply 75 kg of lime per mu or 25 g/m2 of 50% carbendazim wettable powder mixed into the soil for soil disinfection treatment.
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Panax notoginseng seedling lifting time and seedling grading methods
The harvesting time for Panax notoginseng seedlings is generally from early December to late January of the following year. When harvesting, care should be taken to avoid damaging the root system and seed buds, and seedlings should be planted immediately after harvesting. Grade 1 seedlings: individual plant weight not less than 2.5 grams, dormant buds plump and strong, root system well developed, free from pest and disease infection and mechanical damage. Grade 2 seedlings: individual plant weight between 1.25 and 2.5 grams, dormant buds plump and strong, root system well developed, free from pest and disease infection and mechanical damage. Grade 3 seedlings: individual plant weight between 0.75 and 1.25 grams, dormant buds of average growth, root system of average growth, free from
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