Water chestnut.

Sa grass is a shallow water-based root herb. Also known as horseshoes, chestnuts. Use bulbs for vegetable consumption. Li's Herb Outline describes its plant nature and cultivation methods in detail. Cultivation is common in the provinces south of the Yangtze River in China. Guangxi Guilin, Zhejiang Yuhang, Jiangsu Gao post and Fuzhou, Fujian Province are well-known places of origin. Breed with bulbs. After germination, a short stalk is formed, and its top and side buds are drawn upward in green leafy stems that are as slender as tubes and erect. The leaves degenerate into a diaphragm, which is born on the base of the leafy stem and on the upper part of the bulb, and the photofilm is carried out by the green leafy stem. The short stems of the self-parent plant are drawn around the stems, and the tip is puffed into new bulbs. Spiked flower sequence, small flowers are spiraled. Small nuts, fruity leather, not easy to germinate.

species at 15 degrees C germination, 25 degrees C began to split, 30 degrees C plants grow vigorously, the temperature dropped below 20 degrees C when the bulb formation. Generally in the early spring selection of top buds and side buds sound seeding in the outdoor nursery nursery, often keep moist. About 15 to 20 days can be planted for planting in the field. Plant distance is generally 30 × 60 cm, acres planted about 3000 holes. A certain layer of water is maintained during the division and plant division and nitrogen fertilizer is used. The pursuit of phosphorus fertilizer and potassium fertilizer before the formation of bulbs has a significant effect on improving yield and quality. The main pests and diseases are withering disease, aphids and so on.

bulbs contain about carbon water
compounds
21%,
protein
1.5%, can be raw or cooked. Can also be processed tank storage or used as raw materials for the extraction of starch. Traditional Chinese medicine believes that there is a function of quenching thirst, eliminating food and deheying.