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选择 2 5 6份我国各大豆栽培区代表性地方品种为材料 ,以国际通用的美国 0 0 0～X熟期组的 48份标准品种为对照 ,在南京进行分期播种及光照处理试验 ,制订出与国际相衔接的我国大豆生育期生态类型划分标准 ,将我国大豆划分为 0 0 0～Ⅺ熟期组 ;明确我国长江中下游大豆区春豆归属 0～Ⅳ组、夏豆归属Ⅲ～Ⅷ组 ,并分析长江中下游大豆区春、夏豆品种熟期组地理分布概况 .
A total of 256 representative local cultivars in each soybean cultivation area in China were selected as materials and 48 standard varieties from the 0 0 ~ X ripening group in the United States were used as controls to carry out sowing and light treatment experiments in Nanjing. China is divided into 0 0 0 ~ Ⅺ ripening group according to the international classification of the ecological type of soybean growth stage; the mid-lower reaches of the Yangtze River in China identified the spring beans belonging to 0 ~ Ⅳ group, Xia beans belonging to Ⅲ ~ Ⅷ group , And analyzed the geographical distribution of spring and summer soybean varieties in the middle and lower reaches of the Yangtze River.