机械化黄酒生产过程中，作为糖化剂的块曲的培养需在多个季节进行，可分为冬曲、桂花曲和伏曲。
In the mechanized production of rice wine , the block koji as saccharification agent was cultivated in different seasons and thus were divided into winter koji , autumn koji , and summer koji .
冬曲