中文摘要：

[目的]用棉纤维品质指标拟合能同时表达棉纤维综合品质和纺纱质量棉纤维综合指数模型.[方法]通过不同品质棉纤维的纺纱试验,采用主成分分析等方法,对不同品质原棉纺纱试验结果和棉纤维品质指标进行分析.[结果]⑴在成纱质量多个指标中,单纱强力是主要指标.⑵原棉纤维品质是决定单纱强力的主要因素.在不同纺纱工艺下,虽然同一原棉单纱强力不同,但不同原棉单纱强力分布趋势不受纺纱工艺影响,即如果棉纤维综合品质高,则在任何工艺条件下,其单纱强力高.⑶纤维长度、纤维强度、整齐度和麦克隆值是棉花纤维综合品质关键指标.基于上述研究结果建立棉纤维综合品质指数（IFQI）模型.经过分析,反映纺纱均匀性指数、单纱强力、成纱综合品质可选择模型.IFQI模型机理性强、自变量少、形式简单直观,且与单纱强力、纺纱均匀指数呈极显著正相关.并建立SCI与IFQI间关系模型：SCI=0.3684×IFQI＋35.588.[结论]IFQI模型可作为农业部棉纤维检验和纺织工业棉纤维检验部门共同参考指数,不仅解决两部门棉纤维重复检验问题,而且能大大减少棉纤维检验工作量.

英文摘要：

[ Objective ] An integrated fiber-quality index model （IFQI） with the cotton fiber qualities which can directly express cotton fiber integrated quality and spinning yarn quality was studied. [Method] Based on the experimental data of spinning yarn, the data of cotton fiber qualities were analyzed by using the principal components. [Result] （1） The single yarn strength is the principal index in kinds of quality indexes which influence yarn strength. （2） The cotton fiber qualities are crucial factors to spinning strength. Though different spinning yam techniques lead to different raw cotton strength, but the spinning yam＇s strength trend is not changed because of the spinning yarn technique. Thereby, whatever the spinning yarn technique is, the cotton fiber qualities are better, their spinning strength is stronger. （3）The fiber length, fiber strength, micronaire and uniformity are the pivotal indexes expressing IFQI. All of the above results are the basic knowledge to build up the models of IFQI. According to spinning consistence index, spinning yam strength, spinning yarn integrated quality, IFQI = （ Len - 10 ） / √M ic × Sir was the best chose. As the models oflFQI has quite a lot of advantages like explicit mechanism, few independent variables, simple and intuitionist, and also the integrated fiber quality index had a positive correlation with yam strength and spinning consistence index. In addition, the model of the relationship between IFQI and SCI was established as： SCI=0.3684 xlFQI＋35.588. [ Conclusion ] It is concluded that IFQI is the shared reference index for the testing of both cotton fiber of the Ministry of Agriculture and the Ministry of Spin Industry. Moreover, it can greatly reduce workload of testing cotton fiber.