菘兰又称草大青,为十字花科二年生草本.菘兰以根和叶入药,其根叫板兰根,叶叫大青叶.根及叶味苦,性寒。有清热解毒、凉血之功能。主治流行性感冒、流行性腮腺炎、流行性乙型脑炎、急性传染性肝炎及咽喉痛等症。1、选地、整地、施肥:菘兰喜温凉环境,耐寒冷、怕涝、宜选排水良好,疏松肥沃的砂质土,平原和非积土种植。播前深翻土地20—30厘米,施足基肥,打碎土 Orchid blue grass, also known as the grass, for the cruciferous perennial herb.Granthus root and leaves into medicine, its root is plankton root, leaves called Folium. Root and leaf bitter, cold. Have detoxification, cooling blood function. Indications of influenza, mumps, encephalitis, acute infectious hepatitis and sore throat embolism. 1, the election, land preparation, fertilization: 菘 Lan like cool environment, cold, waterlogging, should choose well-drained, loose and fertile sandy soil, plains and non-forage planting. Sowing the land before sowing 20-30 cm, Shizujifei, broken soil