High-yield cultivation techniques of Polygonum multiflorum

Polygonum multiflorum, alias red polygonum multiflorum, polygonum multiflorum, iron scale support, red elimination, etc. To underground root for medicinal purposes, there are liver and kidney, benefit essence and blood, nourishing the mind and tranquilizing the mind, detoxification and stagnation, moistening the intestines effect. Indications neurasthenia, anemia, white hair, dizziness, insomnia, night sweats, waist and knee soreness, spermatorrhea, leucorrhea, high cholesterol, constipation caused by deficiency of yin and blood, lymph node tuberculosis, furuncle and other diseases. The vine of Polygonum multiflorum is called night knotweed vine, which has the function of nourishing heart and tranquilizing mind and dispelling rheumatism. Indications of renal failure insomnia, dreaminess, body aches and other diseases. Hubei, Guangxi, Guizhou, Jiangxi and other southern provinces. Mostly wild.

It is characterized by perennial twining herbs of Polygonaceae, up to 3 meters long. Root slender, terminal form hypertrophy of the root tuber, solid and heavy, reddish brown to dark brown appearance, section for brownish granular. The upper part of the stem is multi-branched, often reddish purple, glabrous, slightly woody at the base, hollow. Leaves alternate, long stipitate, narrowly ovate or cordate, 4-8 cm long, 2.5-5 cm wide, apex acuminate, base cordate or arrow-shaped, entire or slightly undulate, dark green above, light green below, smooth on both sides. Stipules membranous, sheathlike, brown or brown, amplexicaul, 5-7 mm long, easily ruptured and remaining. Flowers small, ca. 2 mm in diam., white, numerous, densely clustered into large panicles, terminal or axillary, inflorescences much branched, pedicules articulate, base with membranous bracts, blades ovate-lanceolate; petals 5-parted, lobes obovate, unequal in size, outer 3 plump, abaxially winged; stamens 8, shorter than perianth; pistil 1, ovary triangular, style short, stigma trifid, capitate. Achenes ovate to elliptic, 3-sided, 2-3.5 mm long, black glossy, all enclosed in persistent perianth, perianth conspicuously 3-winged, brown at maturity.

1. Growth habits Polygonum multiflorum likes warm and humid environment. Fear of drought, avoid ponding. Adaptability is stronger. The soil requirements are not strict, but it is better to have deep, loose and fertile sandy soil.

Second, soil preparation and fertilization select high terrain, good drainage field intensive cultivation. Combined with soil preparation, apply sufficient base fertilizer: 3000 kg of miscellaneous fertilizer, 20 kg of urea and 50 kg of phosphorus and potassium fertilizer per mu. Then make a 70 cm wide high bed and wait for sowing.

3. Cuttage propagation and layering propagation are adopted in the production of Polygonum multiflorum L. It can also be propagated by seeds. Cuttage propagation in April to May, choose vigorous growth, no diseases and insect pests 1-year thick vines, to its tender stems, take the middle, cut into 20 cm long cuttings. Each section has 2 - 3 sections. Then the seed section is treated with rooting powder, and planted on the whole bed surface according to the row spacing of 20 X 20 cm. Water preservation, in order to survive. the layering propagation is carried out in the vigorous growth period of polygonum multiflorum from June to July, 3 - 4 year old plants which grow healthily and are free from diseases and insect pests are selected, the vines are bent and pressed into the soil, the buried parts are cut with knives, and the soil is kept moist. Soon the wound will take root and sprout. In the spring of the following year, the mother plant can be cut off and cultivated separately. Seed propagation is to sow polygonum multiflorum seeds according to the row spacing of 20 X 20 cm on the whole bed surface. Put about 5 seeds in each hole. Water preservation, to facilitate emergence. Sowing rate per mu is 1 kg. Can also be used to transplant seedlings, but seedlings must increase the amount of seeding. 2 kg seeds per acre.

4. After field management of Polygonum multiflorum seedlings, attention should be paid to intertillage and weeding. For large-scale planting, soil treatment with field herbicides before seedling can effectively control various weeds. Pay attention to watering in dry weather and timely drainage in rainy weather. Seedling height of 10 cm, should stand beside the plant a bamboo pole, so that rattan winding climbing, to facilitate ventilation and light transmission. Topdressing should be applied once before and after the beginning of autumn: urea 10 kg and potassium dihydrogen phosphate 10 kg per mu. Sprinkle a layer of soil manure on the bed surface in winter.

V. Pest control The main diseases of Polygonum multiflorum are leaf spot disease and root rot. Comprehensive control measures can be adopted when controlling: 1. When preparing the soil, 3 kg carbendazim powder is applied per mu for soil disinfection. 2. Spray 1∶1∶100 Bordeaux mixture before disease onset. 50% carbendazim 500 times solution was sprayed to control the disease at the initial stage. Once a week, three times in a row. The pests are mainly aphids, which can be controlled by aphids. Underground pests were killed by acine sulfur scale combined with poison bait.

6. Harvesting and processing Polygonum multiflorum is generally collected before and after the beginning of winter 3 to 4 years after planting, and the stems and leaves on the ground are withered. When digging, first cut the vines on the ground, then dig out the underground tubers, clean the soil, cut into 1.5 cm thick slices, dried and sold as medicine. The tuber fleeceflower vine is harvested once a year in autumn, and can be tied into small handles and dried. The yield per mu is 350 kg. Fleeceflower vine 300 kg.