试验对冀丰554与河北省部分主推棉花品种进行了产量性状和生理指标的比较研究。结果表明:在蕾期和花铃期,冀丰554主茎功能叶的可溶性蛋白含量显著高于其它品种;在开花期、花铃期和吐絮期,其叶面积指数和叶片净光合速率、SOD活性均较高,与其它品种差异显著。该品种单株结铃最多,铃重最大,优质铃比重最高。 Experiments were conducted to compare the yield traits and physiological indexes of Ji Feng 554 and some main cotton varieties in Hebei Province. The results showed that the content of soluble protein in main stem of Ji Feng 554 was significantly higher than that of other cultivars at the budding and flowering stages. The leaf area index and leaf net photosynthetic rate, SOD Activity are higher, significant difference with other varieties. The varieties of boll bolls most, boll weight, the highest proportion of high quality bell.