Analysis:
The aquatic food horseshoe is named after its underground stem is similar in shape to horseshoe. Horseshoe, formerly known as water chestnut, also means underground fruit. Horseshoe is very common in many dishes, especially Cantonese and Hunan dishes. For example, horseshoe patties, horseshoe cakes, stewed pork ribs with horseshoe lotus root, fried shrimp with horseshoe, etc.
The water chestnut cake tastes soft, waxy and silky. The taste is refreshing, sweet and refreshing, and it has the function of clearing away heat and promoting digestion. Its color is yellow, it can be folded without cracking, and it is soft, smooth, cool and tough.
Origin of aquatic horseshoe species;
Most scholars believe that water chestnut originated in China and India. The earliest record of water chestnut in China can be found in Erya (about 2nd century BC). The first names of water chestnut are Feeling of Things (1 1 the second half of the century) and The Romance of Materia Medica (165444).
Domestication and cultivation of water chestnut was relatively late, and the earliest cultivation of water chestnut was found in ancient books between the Song Dynasty. Water chestnut distributed in western countries was introduced in the 0/7th century.
Morphological characteristics and growth habits of aquatic horseshoe;
Morphological characteristics of aquatic horseshoe;
The underground creeping rhizome is slender, and the end expands into bulbs (underground metamorphosed stems). Bulb oblate, smooth surface, dark reddish brown or purplish red when mature, with 3-5 rings, short beaked terminal buds and lateral buds. According to different varieties, the bulb diameter is10-50 mm.
The aboveground stems are hollow and tubular, cylindrical and upright, with smooth surface, dark green, unbranched, jointed, and membranous degenerated leaves are born on the nodes. The leaf sheath is thin, the sheath mouth is inclined and easy to fall off.
Growth habit of aquatic horseshoe;
Water chestnut is a perennial aquatic herb, which is warm and humid and not cold-resistant. Like warm and humid, frost-resistant, often growing in shallow water fields. 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℃, but in the later growth stage,
Shortening illumination hours (less than 13 hours) can promote bulb formation, and lower temperature (20-25℃) is also beneficial to bulb expansion. The soil is sandy loam or humus, with shallow soil layer and pH value of 6-7.