Polygonum multiflorum Thunb is a perennial plant. The tuberous root is thick, rectangular 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 ovoid or oblong, 3-7 cm long and 2-5 cm wide, with tapering tips, heart-shaped or nearly heart-shaped bases, rough edges and entire edges; Petiole length1.5-3cm; Stipules sheaths membranous, oblique, glabrous, 3-5 mm long.
Inflorescences are conical, terminal or axillary, pedicels are slender, perianth segments are oval, with different sizes, and the outer three larger perianth segments have wings on the back, which expand when bearing fruit, and the perianth is nearly round with a diameter of 6-7 mm; 8 stamens, the lower part of filament is wider; Style 3, very short, stigma capitate.
Extended data:
Tiantuan management
1, keep the field moist. Pay attention to weeding during the growing period, and topdressing human and animal manure 1 time in May. The height of the seedlings is about 30cm, so it is necessary to insert bamboo poles or branches and let the stems and vines twine and grow. When the seedlings are dumped in February, 1 time, the rhizosphere soil is cultivated by removing dead vines and applying decomposed compost or soil miscellaneous fertilizer.
2. Fixed distance and seedlings: When the height of seed propagation seedlings is about 10 cm, the over-dense or weak seedlings are eliminated. When the seedling height is 15cm, the spacing between plants should be 25-30cm.
3. Fertilizer and water management: Polygonum multiflorum likes fertilizer. In addition to the application of foot fertilizer, a small amount of human and animal manure water is forced to be applied at the seedling stage to promote the growth of seedlings.