我国自1976年试种推广杂交稻以来,根据组合生育期、气候因素和生产条件,主要当作中稻和晚稻推广。1983年全国推广籼型杂交稻面积共计10124万亩,其中当作中稻种植的4493万亩,当作晚稻种植的4979万亩,而当作早稻种植的仅651万亩。四川、江苏、贵州等省主要当作中稻;湖南、湖 Since 1976, China has tried to promote hybrid rice, according to the combination of growth period, climatic factors and production conditions, mainly as middle and late rice promotion. In 1983, the total area of ​​indica hybrid rice in China was 101.24 million mu, including 44.93 million mu for medium-sized rice cultivation, 49.79 million mu for late rice cultivation and only 6.51 million mu for early rice cultivation. Sichuan, Jiangsu, Guizhou and other provinces as the main rice; Hunan, Lake