聚合草(又叫肥羊草、爱国草等)是紫草科聚合草属,为多年生草本植物,一般每亩年产鲜草2,000斤左右,高者达3,000斤以上。鲜草含粗蛋白质3～4.6％,干草含22～28％。一亩鲜草的蛋白质含量,约相当于10,000斤玉米所含的蛋白质,是家畜、家禽的优质高产饲料。聚合草适应性强,耐寒、耐涝、耐刈割。1974年引入我省,目前各地区都有种植。聚合草主要靠肉质根繁殖,茎秆虽能繁殖,但数量不大,种籽又不易采集到,因而影响了它的迅速繁殖和推广。为了解决这个问题,省畜牧兽医研究所1975年在温室进行叶柄繁殖试验,成 Aggregate grass (also known as Sheep grasses, patriotic grass, etc.) is a comfrey Polygamy, perennial herb, generally yield about 2,000 pounds of fresh grass per mu, the highest of more than 3,000 pounds. Fresh grass with crude protein 3 to 4.6%, hay with 22 to 28%. The protein content of an acre of fresh grass, equivalent to about 10,000 pounds of corn contains protein, livestock, poultry, high-quality feed. Aggregation grass adaptability, cold, waterlogging, resistance to cutting. Introduced to our province in 1974, the current planting in all regions. Aggregate grass mainly by fleshy root breeding, although stems can breed, but the number is not large, the seeds are not easy to collect, thus affecting its rapid breeding and promotion. In order to solve this problem, the Provincial Institute of Animal Husbandry and Veterinary Pest Regeneration Experiment in greenhouse in 1975, into