聚合草是紫草科(Borrdgmaceae)聚合草属(Sgmlzhgtum)多年生草本植物。又名饲用紫草、紫草根、友谊草(中国)。1975年全国品种资源会上决定取消其他名称,统一定名为聚合草。聚合草原产于苏联,早在十八世纪末传入英国、德国。到二十世纪初已到美国、非洲南部、丹麦等地进行广泛栽种。茎、叶产量很高,在英国每年可收割4—6次,亩产2600—33300斤,在日本气候温和,每年收获6—7次,亩产 Polymerised grass is a Borhggaceae genus Sgmlzhgtum perennial herb. Also known as feeding comfrey, comfrey root, friendship grass (China). 1975 National Resources Conference decided to cancel the other varieties of resources, unified name polymerization grass. Aggregated grassland produced in the Soviet Union, as early as the late eighteenth century into the United Kingdom, Germany. By the early twentieth century, it has been widely planted in the United States, southern Africa and Denmark. Stems, leaves high yield, 4-6 times a year in the United Kingdom can be harvested, 2600-33300 kg per mu, mild climate in Japan, harvest 6-7 times per year, per mu