臺灣甘藷食物供需特性研究

Abstract

Sweet potato, lpomoea batatas, is widely planted after introduced intoTaiwan. The article is based on the changes of area and production of sweetpotato, and the R&D trend of the varieties since the 20 century to control ofthe role of sweet potato on the food demand. From the high percentage of drychip and starch content changed to the high nutritious and tasteconsuming-oriented market, the sweet potato plantation stage in Taiwan can bedivided into three periods: During the Japanese period, it is mainly the highpercentage of dry chip and starch content Paiholan and Tainung No. 31; Duringthe period after Taiwan Recovery to 1966, it is mainly high percentage of drychip and starch content Hosuwin and Tainung No. 31; from 1966 to now, it ismainly the tasteful Tainung No.57 and No.66. Sweet potato have good landadaptation chacter. The localized cultivation method is by crop roatation toaviod causing pest.s damage due to continutious plantation. As for the shortgrowing season or short of irritation area, it applied the single cultivation.During the period from 1950 to 1966, the area was able to keep at about 230,000hectares which mainly distributed at Yunlin, Chiayi and Tainan area. After 1967,free of miscellaneous gain crops importment replaced feed supply chacter. Thearea is growing down to 10,000 hectares in 1993. And Yunlin, Chiayi, Tainan andcoastal sand area are major plantation area. As for.sweet potato production hasbeen sharply reduced from more than 3 million M.T. to 180,000 M.T. on the past20 years. At present, sweet potato has its marketing channel and transactionstyle on the supply of fresh food, processing and starch making. As for themarketing of the fresh and processing product depended on sales merchanttraditionally. However, in the past ten more years, the northern coastal areahave organized a mutual.shipping and marketing system to sell fresh sweetpotato. A