Polygonum multiflorum Thunb is a perennial plant. The tuberous root is thick, oblong and dark brown. Stems twining, 2-4 meters long, multi-branched, with longitudinal edges, hairless, slightly rough, lignified at the lower part.
The leaves are oval or oblong, 3-7 cm long and 2-5 cm wide, with tapering tips, heart-shaped or nearly heart-shaped bases, rough sides and entire edges; Petiole length1.5-3cm; Stipules sheaths membranous, oblique, glabrous, 3-5 mm long.
Inflorescence conical, terminal or axillary, pedicel slender, perianth segments oval, unequal in size, outer three larger ones with wings on the back, enlarged when fruit is produced, and perianth is nearly round in shape with a diameter of 6-7 mm; Stamens 8, the lower part of filament is wider; Style 3, extremely short, stigma capitate.
Extended data:
field management
1, keep the field moist. Weeding should be paid attention to during the growth period, and human and animal manure water should be topdressing 1 time in May. The height of seedlings is about 30cm, and bamboo poles or branches should be inserted for the twining growth of stems and vines. 1 February, combined with the removal of dead vines, apply decomposed compost or soil miscellaneous fertilizer1time, and cultivate the soil in the rhizosphere.
2. Spacing and fixing seedlings: When the seedling height of seed propagation is about 10 cm, the over-dense or weak seedlings should be thinned. When the seedling height is15cm, the seedling should be thinned and strengthened according to the plant spacing of 25-30cm.
3. Fertilizer and water management: Polygonum multiflorum likes fertilizer. Besides applying foot manure, light human and animal excrement and urine water is forced to be applied at seedling stage to facilitate seedling growth.