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日本川山紫黑地瓜，薯形纺锤，薯皮紫黑色，肉紫色，叶色紫绿，茎、叶、梗可作高档蔬菜食用，薯块含有多种抗癌物质，经常食用有抗癌、降压、补钙等功效，食味极佳，在国外被誉为“太空保健食品”，其淀粉可制做天然紫黑色粉条、粉皮等，亦可加工纯天然紫色“地瓜枣”，有较高
Japanese Chuan Shan purple sweet potato, potato-shaped spindle, purple sweet potato, purple, leaf color purple, stems, leaves, stems can be used for high-grade vegetable consumption, tubers contain a variety of anti-cancer substances, Antihypertensive, calcium and other effects, excellent taste, known as “space health food” in foreign countries, the starch can be made of natural purple black vermicelli, vermicelli, etc., can also be processed pure natural purple “sweet potato”, with higher