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甘薯是台湾省的重要杂粮作物。历来,甘薯的用途约73％供家畜饲料,11％为食用,其余16％供作食品或淀粉加工原料。台湾甘薯种植面积在六十年代以前,常年维持在345万亩左右,1953年总面积达369万亩,总产3,347.797吨,平均单产901公斤;七十年代以后,由于水利设施改善,轮作制度变更以及进口玉米饲料倾销市场,甘薯的饲料用量减少,栽培面积直线下降。据台湾农林厅1985年《台湾年报》资料,1983年甘薯种植面积仅53.88万亩,总产588,627吨,平均亩产1092公斤。
Sweet potato is an important cereal crop in Taiwan Province. Historically, about 73% of the sweet potato’s use has been for animal feed, 11% for food and the remaining 16% for food or starch processing. Before the 1960s, the planting area of sweet potato in Taiwan remained at about 3.45 million mu. The total area of 1953 was 3.69 million mu with a total output of 3,347.797 tons, with an average yield of 901 kg. After the 1970s, due to the improvement of water conservancy facilities, the rotation system was changed As well as the import of corn feed dumping market, reduce the amount of feed sweet potato, cultivation area plummeted. According to Taiwan’s Agriculture and Forestry Department in 1985, “Taiwan’s Annual Report” data, in 1983 only 53.88 acres of sweet potato acreage, total output 588,627 tons, the average yield of 1092 kilograms.