日本黄薯和黑薯是我国近年引进种植成功的甘薯新品种。日本黄薯,皮黄色,肉色深桔红色,表皮光滑,十分美观,食味香甜而沙,口感好,薯皮薄,熟后皮肉易分离。日本黑薯,紫红近黑色,光洁漂亮,肉色紫红鲜艳,比“心里美”萝卜肉色更美观,熟后紫红色,食味住,富含硒、碘,营养优于其它甘薯品种。这两个品种很受城乡居民和饭店宾馆的欢迎,市场售价及种苗价格高。为了做到引少量种薯,繁更多种苗,现介绍单叶节快速繁苗的技术如下。甘薯秧蔓的每个叶节上都有一个腋芽和两个根原基,在适宜的环境条件下,利用甘薯单叶节快速繁苗技 Japanese sweet potatoes and black potatoes are the new varieties of sweet potatoes introduced successfully in China in recent years. Japanese yellow potato, yellow skin, dark red meat color, smooth skin, very beautiful, sweet and savory taste, good taste, thin walnut skin, cooked skin easily separated. Japan’s black potato, purple and black, smooth and beautiful, flesh-colored purple, more beautiful than the “beauty of the heart” radish flesh, cooked fuchsia, taste live, rich in selenium, iodine, nutrition better than other sweet potato varieties. These two species are very popular with urban and rural residents and hotel hotels, the market price and seedling prices high. In order to achieve the guidance of a small amount of seed potato, more variety of seedlings, are introduced single leaf festival fast propagation technology is as follows. Each leaf node of sweet potato seedling has an axillary bud and two root primordia. Under appropriate environmental conditions,