近数十年来,在苏联,特别是乌克兰草原地区,冬小麦籽粒品质表现出明显下降的趋势——蛋白质含量下降和面筋的物理特性恶化.因此,研究这一问题具有实践意义.分析某一地区品种更换的历史表明,随着生产上新的更高产品种的采用,籽粒蛋白质的含量逐渐会有所下降,特别是那些开始更换的新品种表现尤为突出. In recent decades, in the Soviet Union, especially in the grassland of Ukraine, the grain quality of winter wheat showed a declining trend - the decrease of protein content and deterioration of the physical properties of gluten.Therefore, the study of this issue has practical significance.Analysis of the variety of a region The history of replacement shows that with the introduction of new, higher-yielding varieties of production, there is a gradual decline in the content of grain protein, especially for those new varieties that are beginning to be replaced.