紫草根原产于日本、澳大利亚等地,1967年由中国农科院畜牧所从国外引进。紫草根系多年生草本植物,丛生茎叶,穗状花序,花呈淡紫色、灰色或淡红色,花期4—11月,但开花不结实,靠根茎分株繁殖。叶脉呈网状,茎叶密生白色短茸毛,叶全缘,色深绿。在我所经过几年栽培,生长较好,产量高,营养丰富。每亩年产量可达数万斤。干紫草根含粗蛋白15.86％。粗脂肪 Comfrey root native to Japan, Australia and other places, 1967 by the Chinese Academy of Agricultural Animal Husbandry from abroad. Lithospermum perennial herbaceous roots, clusters of stems and leaves, spikes, flowers were lavender, gray or pink, flowering from April to November, but the flowering is not strong, by rhizomes ramets breeding. Veins reticulate, stems and leaves dense white short velvet hair, the whole leaf, dark green color. After several years of cultivation, I grew well and had high yield and rich nutrition. Annual output of up to several million kilograms per mu. Licorice root crude protein containing 15.86%. Crude fat