1950-1953年間，臺灣糖業公司曾施行斤米制度，後因財務問題而取消。本文指出該制度與日本時代之米價比準法皆是為總合風險（aggregate risk）而設之保險制度，與一般為獨立風險而設置之保險實務不同。本文探討導致米價比準法與斤糖斤米個別成敗的因素。

　　　　　Between 1950 and 1953, the Taiwan Sugar Company (TSC) adopted the method of "A Gin of Rice for a Gin of Sugar" (GRGS) to get cane from farmers. GRGS brought financial crisis to TSC, and was then called off. This paper points out GRGS, and the indexed pricing method practiced by sugar mills in the Japanese colonial era, insured farmers against an aggregate risk, rather than idiosyncratic risks covered by normal insurance businesses. We study why the indexed pricing method survived notwithstanding; but GRGS failed.