早稻是我国水稻主要栽培类型之一，通常是指双季稻的前季稻，基本上为籼型，从地理生态上可分为华南早稻和长江流域早稻，其中华南早稻的早熟品种可在长江流域作中迟熟早稻种植，华南早稻的中迟熟品种可在长江流域作中稻种植，反之亦可。目前我国早稻种植地区主要分布在海南、 Early rice is one of the main types of rice cultivation in China, usually refers to the first crop of double cropping rice, basically indica, from the geographical and ecological can be divided into early rice in South China and the Yangtze River valley early rice, of which South China early rice varieties in the Yangtze River The late-maturing early rice cultivation in the basin, the late maturing varieties of early rice in South China can be planted in the Yangtze River rice, and vice versa. At present, China’s early rice cultivation areas are mainly distributed in Hainan,