日本大力水稻是我国1990年从日本引进的高产粳稻品种，其最大特点是千粒重极高（48．1克），为一般品种的2倍。经安徽、浙江、江苏等省几年小区和大面积对比种植，表现很好，亩产一般在550公斤，高达715公斤。1993年经安徽省凤台县顾桥良种繁育场种植23亩，平均亩产624．8公斤 Japan’s RHI is China’s high-yielding japonica rice variety introduced from Japan in 1990. Its most prominent feature is its extremely high 1000-grain weight (48.1 grams), which is twice of that of the common varieties. By Anhui, Zhejiang, Jiangsu and other provinces a few years and a large area of ​​contrast plot cultivation, performed well, generally yield 550 kilograms per mu, up to 715 kilograms. In 1993 by Fengtai County, Anhui Province, Gu Qiao seed breeding 23 acres of planted acres, the average yield of 624.8 kilograms