莲在我国已有三千余年栽培历史，系广布性水生植物，生长在湖湾、池塘等浅水处。我国栽培的品种可分为三类：以采收莲子为主的“子藕”；取地下茎为主的“莲藕”；观赏用的“花藕”。莲为多年生挺水植物，根茎发达，由根茎节部生出叶和须根。叶盾状，圆形，全缘，中央微凹，直? Lotus has been cultivated for more than three thousand years in our country. It is a widely distributed aquatic plant that grows in shallow waters such as the bay and ponds. Cultivars cultivated in our country can be divided into three categories: the “lotus root” mainly for harvesting lotus seeds; the “lotus root” mainly for underground stems; the “lotus root” for ornamental purposes. Lin is a perennial emergent plants, developed rhizomes, stems produced by the Ministry of roots and fibrous roots. Leaf shield, round, entire, central dimple, straight?