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本文对棉花纤维强度（力）的形成机理与改良途径进行了综合分析，指出种间、品种间成熟纤维的强度差异主要取决于：（１）纤维发育过程中，纤维素沉积与超分子结构变化的配合性；（２）纤维加厚发育初期，晶区取向分布角ψ和螺旋角的初始差异而导致的成熟纤维晶区取向参数差异，并有Ｔｏ＝Ｔｋｃｏｓψ的理论关系；（３）纤维加厚发育初期，取向分散角α的初始差异与变化规律。二倍体栽培棉种螺旋角特别小，对提高陆地棉与海岛棉纤维强度有重要作用。纤维强度的遗传改良主要应依赖晶区取向参数，特别是螺旋角的优化。通过外界因素调控，可影响纤维素沉积与超分子结构变化的配合性，提高陆地棉纤维强度。
In this paper, the formation mechanism of cotton fiber strength (strength) and ways to improve the comprehensive analysis, pointed out that the species, the varieties of mature fiber strength difference depends mainly on: (1) fiber development, cellulose deposition and supramolecular structure changes (2) Differences in orientation parameters of ripe fiber due to the initial difference of orientation angle ψ and helix angle in the initial stage of fiber thickening, and the relationship of To = Tk cos ψ; (3) Initial Difference and Variation of Orientation Dispersion Angle α in Early Stage of Thick Development. Diploid cultivars have a particularly small helix angle, which plays an important role in enhancing the fiber strength of upland cotton and island cotton. The genetic improvement of fiber strength should mainly depend on the grain orientation parameters, especially the optimization of helix angle. Through the regulation of external factors, it can affect the compatibility of cellulose deposition and supramolecular structure changes and improve the fiber strength of upland cotton.