吉林省公主岭市朝阳坡镇城子上村多年来先后引进国内外红薯新品种，如高淀粉型，食用型，深加工型等。今年又引进黑色地瓜，原产日本国，含多种微量元素，是普通红薯的３～５倍，是营养保健、抗癌的滋补佳品。薯皮黑紫色，肉似心里美萝卜颜色相差无几，煮熟后比紫罗兰颜色还好? Over the years, Chengzi Shangcun, Chaoyangpo Town, Gongzhuling City, Jilin Province has successively introduced new sweet potato varieties at home and abroad, such as high starch type, edible type and deep processing type. This year, the introduction of black sweet potato, native to Japan, with a variety of trace elements, is an ordinary sweet potato 3 to 5 times, is nourishing health, anti-cancer nourishing share. Tofu dark purple, meaty heart like the United States radish color almost cooked more violent than the color?