The efficacy and functions of water chestnuts are as follows:

1. Water chestnuts are rich in nutrients, containing abundant starch, protein, glucose, saturated fatty acids and multiple vitamins, and are easy to digest and absorb. It has the effects of strengthening the spleen, nourishing the stomach, nourishing the kidneys and nourishing the blood.

2. "Compendium of Materia Medica" says that eating water chestnuts can nourish the spleen and stomach, strengthen the thighs and knees, strengthen and replenish qi. Water chestnut powder porridge is beneficial to the gastrointestinal tract, can relieve internal heat, dispel diseases and strengthen the body. It is beneficial for the elderly to eat it regularly.

3. Eating water chestnuts has beauty and health care effects.

4. Eating water chestnuts has the effects of diuresis, lactation, quenching thirst and detoxifying alcohol.

5. Anti-cancer.

Planting of water chestnuts:

1. Select water chestnut pond: Choose a pond with fertile soil, small wind and waves and gentle rise and fall. The water depth is generally .3-4m.

2. Apply sufficient base fertilizer: Apply 2kg of pig manure or decomposed mud manure per mu before planting. Apply quick-acting fertilizer after germination. Generally, apply 5kg of urea per mu.

3. Transplanting and planting: The planting time is generally March to April. If planting shallow water chestnuts, the row spacing is generally 1.5-2m, the hole spacing is 1.5-2m, and one water chestnut seedling is planted in each hole. Bundle about 2-3 plants.