以抗倒性不同的 1 1个高产小麦品种 (系 )为材料 ,通过力学分析和根量测定 ,提出了“小麦品种倒伏系数”的概念。经应用于品种抗倒性的评价 ,证明“小麦品种倒伏系数”综合考虑了植株的高度、重量、茎秆机械强度和根量等因素的影响 ,能客观、准确地评价品种抗倒性。通径分析结果表明 ,茎秆机械强度和根量与品种抗倒性关系最为密切。探讨了提高品种抗倒伏能力对提高产量潜力的重要意义 Based on the analysis of mechanics and the determination of root mass, 11 wheat varieties (lines) with different lodging resistances were put forward the concept of “the coefficient of lodging of wheat varieties”. The evaluation of the lodging resistance of the varieties showed that the coefficient of lodging of the wheat varieties comprehensively considered the effects of plant height, weight, mechanical strength of the stalks and the amount of roots, and could objectively and accurately evaluate the lodging resistance of the varieties. The results of path analysis showed that the mechanical strength and root amount of the stalk were the most closely related to the lodging resistance. The significance of improving the lodging potential of varieties is discussed