Cultivation and Processing Technology of Polygonum multiflorum
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Polygonum multiflorum bitter, sweet, astringent, slightly damp, there is nourishing liver and kidney, benefits essence blood, strong bones and bones, black hair, the role of the vine has soothe the nerves, antiperspirants. It is a shortage of Chinese herbal medicines. Planting fleece-flower root has higher economic benefits.
I. Cultivation techniques
(1) Cutting propagation: Fast growth, high survival rate, short planting period, and agglomerating, so this method is commonly used for reproduction in production. The cutting period differs depending on the climate. For example, in June-July in Sichuan and in Guangdong in February and May, the branches that grow vigorously and robustly are cut into 20 cm to 25 cm long shoots. Each cutting must have 2 More than one section. According to the row spacing of 35 cm -50 cm, spacing between 20 cm -25 cm, digging holes, inserting 2 - 4 cuttings per hole, oblique insertion of 10 cm, can not be reversed, leaving the upper leaves exposed on the ground. In the following section, the leaves are buried in soil and the cover soil is pressed.
(2) Seed propagation: The base fertilizer should be applied to the seedlings, and the stalks should be made flat and sorghum. Usually sowed from the end of March to the middle of April, according to 10 cm away from the ground to open a shallow trench, sowing the seeds evenly in the ditch, cover soil 1 cm compaction watering. The sowing rate per acre is 1.5 kg-2 kg. About 15 days after sowing, seedlings emerged. Seedlings should always be watered to keep the fields moist. When the seedlings are pulled out, the height of the seedlings can be set at 10 cm to 12 cm and the spacing is 50 cm. Plant spacing is 25 cm and planted in Daejeon.
(3) Field management: It is necessary to keep the fields moist regardless of sowing and cutting propagation to facilitate survival. Pay attention to drainage after survival. Early weeds remove weeds. No longer enter the ground after the scaffolding. In the next spring of planting and cutting, the fleece-flower root of Hedyamium multiflorum applied 1500 kg of compost per acre and was applied to the rows. Or ammonium sulfate 10 kg -15 kg, superphosphate 5 kg -30 kg.
Polygonum multiflorum is a twining stem. When the seedling height is 30 cm, it should be framed so that the stem can grow upward. If there are too many vines, some of them can be cut off, leaving only 3m to 4m, and the base leaves removed to facilitate ventilation. In the south, soil is cultivated at the end of December, which encourages the growth of stems and vines the following year and enhances propagation materials. In the north, the soil should be overwintered.
Second, pest and disease prevention
1. Leaf spot: Occurs in the summer, such as light ventilation in the field, the incidence is lighter. Control methods: spraying 1:1:120 Bordeaux mixture at the early stage of disease, spraying once every 7 days and 10 days, and spraying twice or three times.
2. Root rot: The roots of the diseased plants are rotted, mostly occurring in summer, and they die of withered shoots. Control methods: Irrigate the roots with 50% carbendazim WP 1000 times.
Third, harvesting and processing Planting and cutting 1 year - 2 years, harvested when the autumn leaves withered. Remove stem vines, plan roots to remove dirt and fibrous roots. The root depth of Polygonum multiflorum is up to 1 meter. Each hole has a large area and needs to be excavated. Dig up the roots, cut off both ends after washing, cut into thick slices, bake first and then dry. Stone grinding can also be used, but iron can not be used, so as not to reduce the quality. The cane of Polygonum multiflorum can remove the remaining branches and leaves on the vine, dry it and tie it into a medicine.