Water chestnut likes warm and humid, not cold-resistant. It usually grows in shallow water. Water chestnut needs high temperature and long sunshine in the early growth stage, such as the optimum temperature for germination is 15-20℃ and the optimum temperature for tillering is 25-30℃, and the shortened light hours in the later growth stage should be less than 65438+.
morphological character
Creeping rhizomes are slender. Most of the stalks are tufted, straight and slender, cylindrical, 40- 100 cm high, 2-3 mm in diameter, gray-green, smooth, hairless and with diaphragm. After drying, the surface of the stalk has knots and many longitudinal stripes. No leaves, only 2-3 leaf sheaths at the base of the stem; The sheath is light brown, smooth, hairless, membranous, and the sharp point at the oblique top of the sheath mouth is 7- 15 cm long.