京 9428(改良品系 ) 琥珀色硬粒强筋冬小麦，是小麦育种专家李彰明经杂交选育而成， 1999年通过北京市品种审定委员会审定。 一、品质特点该品种经过进一步改良纯化，籽粒蛋白质含量 16.01％，湿面筋 35.8％，沉降值 52.4毫升，面团形成时间 9.0分钟，稳定时间 16.7分钟，面 Beijing 9428 (improved strain)  amber hard grain strong gluten winter wheat, is a wheat breeding expert Li Zhangming bred by crossing, in 1999 passed the Beijing Municipal Commission for species approval. First, the quality characteristics of the varieties after further improvement and purification, grain protein content of 16.01%, wet gluten 35.8%, sedimentation value 52.4 ml, dough formation time of 9.0 minutes, the settling time of 16.7 minutes, the surface