论文部分内容阅读
试验采用中国辽宁省与美国地理纬度相近、结荚习性相同的中国和美国大豆品种各4个,在相同种植条件下对株型性状进行了比较研究,探讨了大豆高产的株型特征。结果表明:美国大豆品种的节间较短、株高较矮,分枝数较多。美国大豆品种的叶片性状比较好,下部叶片为卵圆形,由下向上叶片逐节变长,中上部叶片较细小。美国大豆品种的荚数显著多于中国大豆品种,而百粒重却显著低于中国品种。在荚粒分布上,美国品种植株上层荚粒所占比例较小,下层荚粒所占比例较大,在同等种植条件下,美国大豆品种的产量显著高于中国品种。
Four Chinese and American soybeans with the same geographical latitude and similar latitude of Liaoning Province in China were used in this study. Plant type traits were compared under the same planting conditions, and the plant type characteristics of high yield soybean were discussed. The results showed that the internodes of American soybean varieties were shorter, the plant height was shorter, and the number of branches was larger. The leaf traits of American soybean varieties are better, the lower leaves are oval, the leaves from the lower to the upper gradually become longer, the upper leaves are smaller. The pods of American soybean varieties were significantly more than those of Chinese soybean varieties, while the 100-grain weight was significantly lower than that of Chinese varieties. In the distribution of pods, the proportion of pod grains in upper layer of American cultivars is smaller and the proportion of pod grains in lower layer is larger. Under the same planting conditions, the yield of American soybean varieties is significantly higher than that of Chinese varieties.