Cotton Science 2005,17(4):217-221

Study on an Integrated Cotton Fiberª²quality Index
ZHANG Li-juan^{1, 2}£¬MENG Ya-li¹£¬CHEN Bing-lin¹, XIONG Zong-wei³, XUE Xiao-ping¹, ZHOU Zhi-guo¹
(1.MOA Key Laboratory of Crop Growth Regulation, Nanjing Agricultural University, Nanjing 210095£»2. The Animal and Environmental Institute of Harbin Normal University, Harbin 150080£»3. Cotton Research Institute,CAAS, Anyang, He'nan 455112, China) ª¤

Abstract: The integrated cotton fiber quality index could either estimate the quality of raw cotton fiber or estimate yarn tensile quality, and is a parameter of no units. Based on the data of spinning yarn and former research, and using the principal component analysis, the results showed that the pivotal indexes expressing cotton fiber quality are length, strength, micronaire, uniformity and enlengthening rate. The model of integrated fiber quality index (IFQI) is established according to the above studies. By analysis, IFQI=£¨Len-10£©/SQRT£¨Mic£©¡ÁStr¡ÁUn is adopted according to the relation of spinning consistence index; IFQI=£¨Len-10£©/SQRT£¨Mic£©¡ÁStr is adopted according to the relation of yarn tensile strength. The model of IFQI has many advances, such as explicit mechanism, few independent variables, simple and intuitive, having positive relative with yarn strength and spinning consistence index and so on. The higher the IFQI, the better the cotton fiber quality. IFQI not only assesses cotton fiber quality, but also takes a token of spinning yarn strength.
Key words: integrated cotton fiber-quality; index; model    [Full Text, 596]