矮粳23是我院以矮粳22×桂花黄F_6的优良株系与农红73杂交育成的晚粳新品种。1974年定型后进行多点鉴定,1975年进行多点试种,1976年参加省区域试验,1977年多点进行大田生产示范,种植面积已推广约4000余亩,1978年将进一步扩大。根据四年 Dwarf Japonica 23 is a new late japonica rice cultivars hybridized with Dwarf Japonica 22 × Osmanthus fragrans F_6 and Nonghong 73 in our hospital. 1974 after more than the identification of stereotypes, 1975, more than a try, in 1976 to participate in provincial and regional trials, 1977 more field demonstration of production, planting area has been about 4,000 acres of extension, 1978 will be further expanded. According to four years