我省二季杂交晚稻大面积是中籼组合作二季晚稻栽培,总叶数为15—16片,全生育期较长,大田育苗移栽难度大。而常规当家品种鄂晚 5号、“105”等,它们都是属于中粳类型,无论在适应性与稳产性方面均表现突出。二季杂交晚稻到底应选择什么类型组合才符合早熟、优质高产要求呢?为了回答这个问题,1984年我们从湖南、安徽等地 Large-scale late rice hybrid rice production in southern China is a mid-season indica hybrid rice cultivation for the second season, the total number of leaves is 15-16, the whole growth period is longer, field transplanting seedling more difficult. The conventional varieties of late E No. 5, “105”, etc., they are all belong to the type of japonica, both in terms of adaptability and stability are outstanding. Second season hybrid late rice in the end should choose what type of combination is in line with precocious, high quality and yield requirements? In order to answer this question, in 1984 we from Hunan, Anhui and other places