关于水稻穗分化进程的划分 ,江苏农学院的叶龄余数法较松岛省三的叶龄指数法和丁颖分类法更为科学、简要和实用 ,是目前广泛应用的一种方法[1、2 ] 。近几年来 ,运用叶龄余数法 ,对太湖稻区有代表性的无锡地区的单季晚粳稻分化进程进行了典型观察与鉴定 ,发现年度间有一定的普? With regard to the division of rice ear differentiation process, the leaf age remainder method of Jiangsu Agricultural College is more scientific, brief and practical than the leaf age index method and Ding Ying classification method of Songdo Three, which is a widely used method [1, 2 ] . In recent years, the leaf age residue method was used to characterize the differentiation of single late japonica rice in representative Wuxi region of Taihu Lake region.