Koo, Hui-wenHui-wenKooWu, Tsong-minTsong-minWuHo, FrankFrankHoChen, VitaVitaChen古慧雯吳聰敏何鎮宇陳庭妍2018-09-102018-09-102006http://doi.org/10.6277/ter.2006.343.4http://scholars.lib.ntu.edu.tw/handle/123456789/323563Agriculture in Taiwan developed rapidly in the Japanese colonial era. The irrigation systems constructed then were generally considered a key factor in this success. Chia-Nan Channels, co-financed by the Governor-General and local farmers, was the largest irrigation system constructed. Despite its large scale, the water supply was still insufficient to irrigate the whole Chia-Nan Plain. In response to this, a 3-year crop rotation plan was executed and farmers had to take turns irrigating their land. This water regulation has been considered a means by which Japanese sugar capitalists exploited Taiwanese farmers, and was criticized by scholars at that time, e.g., Yanaihara (1929). This paper makes a cost-and-benefit analysis of Chia-Nan Channels. Our calculation shows that Chia-Nan Channels actually enhanced the farmer's income significantly, and its impact on a sugar mill's profit was only marginal.日治時期台灣的農業發展相當可觀，而學者多認為水利建設是重要關鍵之一。日治時期的農田水利建設以嘉南大圳規模最大，它是由總督府與農民合資興建。大圳之規模雖大，但其供水仍不足以滿足嘉南平原農作之所需，因此而實施三年輪灌的給水制度。這強制的給水制度受到當時學者如矢內原忠雄(1929)的詬病，認為是日本糖業資本家宰制台灣農民的一種手段。本文嘗試計算嘉南大圳的成本與收益。根據我們的計算結果，嘉南大圳顯著提升嘉南地區的農民所得，卻對糖廠影響不大。application/pdf灌溉成本效益分析irrigationcost-and-benefit analysisjournal article10.6277/ter.2006.343.4