菱角,又称芰、水栗、菱实、芰实,是菱科菱属一年生水生草本植物。在我国南方尤其在长江下游太湖地区和珠江三角洲地区栽培较多。菱角含有丰富的淀粉、蛋白质、葡萄糖、不饱和脂肪酸及多种维生素和微量元素,具有补脾胃、强股膝、健力益气等功效。菱角果肉可食,嫩茎可作蔬菜,菱叶可做青饲料或绿肥,种植菱角综合效益较高。采用大棚育苗和促早熟栽培菱角,可在6月初提早上市,经济效益更加显著。下面介绍大棚菱角早熟栽培技术。一、品种选择 Water chestnut, also known as water chestnuts, water chestnut, rhizome, Gorgon, is an annual aquatic Rhodiola bermudagrass. In south China, especially in the lower reaches of the Yangtze River in the Taihu Lake region and the Pearl River Delta region cultivation more. Water chestnut is rich in starch, protein, glucose, unsaturated fatty acids and a variety of vitamins and trace elements, with the spleen and stomach, strong knee, Jian Qi and other effects. Water chestnut pulp edible, tender stems can be used as vegetables, green leaves can be green feed or green manure, planting water chestnut higher overall efficiency. Greenhouse nursery and early maturing cultivation of water chestnut, early in early June market, economic benefits are more significant. The following describes the greenhouse water chestnut cultivation techniques. First, the choice of species