本文主妥之目的在說明台灣為何在日據後半期發生偏離典型殖民地雙元性發展模式的情形。台灣作為主皇民發展的其例，正如很多權威性的學者點出的，具體表現在日據末期農氏生活水準實質的改善及經濟部門間比較均衡的發展上，而就日資糖業及當時從事台灣研究的日本學者而言，貝1J展現在米糖相剋問題上。作者不同意把日據台灣特異的強氏發展歸因於“日本通民主義不同於歐美准民主義\"或“作物特性使然"的看法，也不認為川野重任等日本學者既採“市場均衡論\"視米糖相剋為“部門生產力發展不平均以致市場均衡價格難以造成\"的結果，卻又同時要求“政府介入壓抑米價以追求資源最迫自己星\"的說法能自圓其說。作者試圖從畫畫民地內部社經結構與日本資本主義體系不同發展階段上存在的社經特性彼此間的互動來了解這個問題。由於直直氏支配必須透過當地既存的社經體系才能進行，作者特別弦調先從剖析一向被忽略的米糖部門內部階級結構及支配繃係以及米糖利益團體之結盟與衡突關係入手才能理解米糖相剋問題的真意及解釋米糖體制危機的形成與解決。

The colonial mechanism of surplus extraction centered on the accumulation of Japanese sugar captial. Various studies have shown that the _ relative stagnation of the rice production in the years prior to 1925 was the key to sugar profits. In the period 1925·1939 the rice sector， which had eluded the penetration of Japanese captial， rapidly expanded production， along with the drastic increase of Japan's market demand for rice. In
sharp contrast to the earlier prolonged stagnation， the expanding rice production enriched native producers and raised peasant living standards. In this paper， we study the structural factors， particularyly the class struc-ture， that caused the surprising developmental pattern centering on the Taiwanese landlord-dominated rice production in the 1925-39 period and contrast it with the pre-1925 development pattern centering on the Japanese capitalist-dominated sugar production. Beyond the comparison of developmental patterns centering on respective crops， we investigate how development of the rice sector intenisified the contradiction between rice and sugar production and undermined the coloial mechanisms of surplus extraction favoring Japanese sugar capital. During the late 1930s， in order to restore the threatened colonial surplus extraction mechanisms and to create conditions conducive to industrialization， the colonial administration used full scale political coercion to undermine the agricultural terms of trade. Our analysis foucuses on the reshaping of both social and economic structures that contradicted the administration's scheme. Along with the attempt to restructure the indigenous social system in order to weaken the native landlord class and its class associates -- miller/merchants -. in the rice sector， the colonial administration tightened its control of the circulation of rice and eventually monopolized the rice trade. We trace the economic imperatives， as well as the balance of power among conflicting class forces (primarily rice producers， miller/merchants， and Japanese rice exporters vis-a-vis sugar capitalists)， in order to understand the reshaping process and its effects.