Polygonum cuspidatum, a traditional Chinese medicine, is the dried rhizome and root of Polygonum cuspidatum. Excavate in spring and autumn, remove fibrous roots, wash, cut short or thick slices while fresh, and dry in the sun. Distributed in northwest, east, central, south and southwest China.
Efficacy and function of 0 1 Polygonum cuspidatum
1, Polygonum cuspidatum has the functions of expelling wind and dampness, promoting blood circulation and dredging collaterals. For patients with rheumatoid arthritis and joint swelling and fever, Polygonum cuspidatum can be used to expel wind and remove dampness, dredge collaterals and relieve pain. If there is traumatic injury or blood stasis swelling and pain, it can be decocted with a single flavor of water, or it can be washed with water for external use, all of which have significant effects.
2. Polygonum cuspidatum has the functions of clearing away heat and promoting diuresis, purging fire and detoxicating. In case of icteric hepatitis, cholecystitis, acute urinary tract infection or burning pain, Polygonum cuspidatum can be used together with other heat-clearing and diuretic drugs. For acute and chronic sore throat, it can also be used with Fructus Forsythiae, Rhizoma Belamcandae, Calomelas or Radix Isatidis.
3. Polygonum cuspidatum has anticoagulant and hypolipidemic effects. Polygonum cuspidatum has a good effect on inhibiting platelet aggregation and protecting vascular endothelial cells.
4. Polygonum cuspidatum has the functions of cooling blood, relieving pain, relieving cough and resolving phlegm. Polygonum cuspidatum has a good effect on treating snake bites, water and fire burns, and fresh products are taken for external use after snake bites; After scalding by fire and water, it can be used as powder alone, mixed with sesame oil, or ground with Sanguisorba officinalis and Borneolum Syntheticum for external application.
5. Polygonum cuspidatum can also be made into pesticides, which has a good effect on preventing borers and aphids; The rhizome and leaves of Polygonum cuspidatum contain tannin, which can be used to extract tannin extract for industrial use.
How much is a catty of Polygonum cuspidatum? Planting prospect of Polygonum cuspidatum
After removing the fibrous roots of Polygonum cuspidatum, clean it, cut it into short sections or thick slices while it is fresh, and dry it in the sun to make medicinal materials. At present, the market price is relatively stable, about 8- 10 yuan a catty. Nowadays, wild Polygonum cuspidatum is very rare. It is understood that wild Polygonum cuspidatum is about a catty in 20 yuan.
Polygonum cuspidatum has remarkable medicinal value and is one of the raw materials of many Chinese patent medicines, and its development prospect in the medical market is considerable. At the same time, its root is also a yellow dye, which has certain industrial value.
Planting techniques of Polygonum cuspidatum
1, land selection and soil preparation
Polygonum cuspidatum has developed root system, strong cold tolerance and drought tolerance, and has low requirements for soil. But it is not suitable for planting in low-lying and waterlogged areas. After the planting site is selected, the soil should be plowed for 20-25cm, and the larger stones should be removed, and the larger clods should be scattered, and then fully decomposed manure1500-2000kg per mu should be applied as the base fertilizer. After fertilization, it should be mixed and stirred with the soil layer, and the ridge should be dug high, about 15-20cm high and 50-55cm wide.
2. Breeding method
The propagation method of Polygonum cuspidatum is generally seeds and rhizomes, but it takes a long time from sowing to harvesting, and the germination rate of seeds is low and the propagation speed is slow, so most of them use rhizomes for propagation in production. Moreover, rhizome propagation also has the characteristics of easy access to materials, easy survival after transplanting and quick effect. Dig out the root system of the plant and divide it into several sections with 2-3 buds on each section. Then open holes or furrows on the border for planting, and cover the soil and water after planting.
3. Field management
After the seedling is unearthed, its growth speed will be accelerated with the increase of temperature. At this time, weeding should be done well, and intertillage should be done in combination with weeding. When the seedlings grow to a certain extent, it is necessary to carry out thinning and replanting in time to increase the ventilation and light transmittance of the plants and avoid affecting the growth of seedlings due to excessive growth. After planting, topdressing should be carried out in time according to the fertility status of the soil. Generally, quick-acting fertilizer 1-3 times can be applied in combination with appropriate trace element fertilizer.
4, pest control
The disease resistance of Polygonum cuspidatum is very strong, and there is no disease at the base during cultivation, mainly because pests affect the yield and quality of Polygonum cuspidatum. Among them, the common pests are scarabs and leaf beetles. Scarabs occur around May, mainly eating the tender tops and leaves of Polygonum cuspidatum. In severe cases, they will eat all the leaves of the whole plant, which is extremely fast. It can be controlled by artificial killing and light trapping, or sprayed with 2000 times of dimethoate chloride to kill adults.