1 997～ 2 0 0 0年研究铃容重和壳重率对棉铃主要性状的影响 ,用 4种模式 1 0 5个材料进行相关回归分析 ,结果表明 ,厚壳棉对铃的体积大、纤维长、开裂角度小 ;中等厚度铃壳棉铃铃重大、衣分高、壳径大 ;薄壳棉铃的体积小、纤维短、开裂角度大 The effects of boll weight and shell weight on the bolls of bolls were studied from 1997 to 2000. Correlation analysis was performed using four models with 105 species. The results showed that the thickness of the bolls was larger and the fiber length was longer , Cracking angle is small; medium thickness boll bell boll large, clothing high, large shell diameter; small bolls of small size, short fiber, cracking angle