板蓝根别名大靛、菘兰、菘青、大青等,为十字花科二年生草本。以根入药称板蓝根,只一年起收,以叶入药称大青叶,根及叶味苦、性寒。有清热解毒、凉血消斑的功能。主产于河北安国、江苏南通,全国各地广泛引种栽培。喜温和、湿润气候,耐寒、怕涝,水浸后易烂根,对土壤要求不严,一般地均可种植。底肥充足耐连作,选择排水良好的沙质壤土为宜。一、栽培技术1.整地施肥:菘兰系深根植物,选择土层深厚,疏松的土地。每亩施圈肥3000~4000公斤,亩施二铵15公斤,亩用生物钾肥4公斤,均匀撒于地内 Banlangen indigo, indigo, chongqing, Daqing, etc., for the biennial herbs cruciferous. To root into the drug said Banlangen, received only from a year to leaf medicine known Daqingye, root and leafy bitter, cold. A heat detoxification, cooling Xiaoban features. Mainly produced in Hebei Anguo, Nantong, Jiangsu, widely introduced throughout the country cultivation. Like the mild, humid climate, cold, waterlogging, easy to root after flooding, the strict requirements of the soil, generally can be planted. Sufficient enough to make enough basement, select the drainage of good sandy loam is appropriate. First, the cultivation technology 1. Site Preparation Fertilizer: Department of deep roots orchid plants, choose the soil deep, loose land. Spraying 3000 ~ 4000 kg per acre, 15 kg diammonium acre, mu with 4 kg of bio-potash, evenly scattered in the ground