Lotus root is a plump underground stem of lotus, which can be used as food. Lotus root is mainly planted in marshland, which is rich in China and Hubei, and belongs to one of the Eight Immortals.
1. Roots: whisker-like adventitious roots, attached to underground stem nodes, in bundles, 5-8 bundles per node, each bundle has 7-2 1 root adventitious roots. Most of the roots are shallow and weak. Root regeneration ability is weak. Susceptible to high concentrations of fertilizer and salt.
2. Stem: underground stem, which grows slender branches the thickness of fingers in the depth of 10-20cm in the soil, called "lotus whip". In the late growth stage, the internodes at the top of the rhizome of lotus root obviously expanded and thickened, becoming edible lotus root. First, the larger lotus root is called the "main lotus root", and there are 2-4 "sub-lotus roots" on the main lotus node, and the larger sub-lotus root can be divided into "sun lotus root". The shorter section at the top of the main lotus root is called the shower head, the longer section in the middle of 1-2 is called the lotus body or the middle section, and the longer section connecting the lotus whip is called the back handle.
Among them, the silk in the "broken silk connection" is the catheter in the conductive tissue.
3. Leaf: commonly known as "lotus leaf", it is a large single leaf, which is pulled up from each node of the stem and has a long handle. The leaves began to roll up vertically, then spread out, nearly round, complete and green, covered with wax powder. The center of the vein is connected with the petiole, called "leaf nose", which is the vent hole of the lotus leaf and communicates with the airway in the petiole and underground stem. There are 1-2 primary leaves, and the petiole is too thin to stand upright, so it can only sink in the water or float on the water. Those that sink in the water are called "money leaves" and those that float on the water are called "floating leaves". Later, the leaves were thick and hard, with spines on the upper side, and stood upright on the water, called "vertical leaves", and they were getting higher and higher, generally 60- 120cm higher than the water, forming a Ye Qun with rising steps. When Ye Qun rises to a certain height, it stays at a normal height, and then leaves become smaller and shorter, forming a descending ladder of Ye Qun. Finally, the largest vertical leaf is extracted and passed through the "back leaf" or "big leaf". Starting from the node where the leaves are attached, the top of the underground stem extends obliquely downward and expands to form the lotus root. Then, on the front section, a short vertical leaf, commonly known as the "terminal leaf", will be produced. When digging lotus root, connect the back leaf and the end leaf into a straight line, and you can judge the position of the new lotus root underground.
4. Flowers, fruits and seeds: Flowers, commonly known as "lotus", are planted on the nodes of some large upright leaves. Flowers are solitary, and the corolla is composed of multiple petals, bisexual. The fruit is commonly known as "lotus", and the scattered lotus seeds are real fruits, belonging to small nuts, with a seed inside, which lasts 30-40 days from flowering to seed maturity.