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系统分析３０个棉花品种系的内在品质构成因素及其相互关系，马克隆值与气纱品质的相关系数的绝对值最大（－０．６６９１），是品质育种的首控指标；比强度与气纱品质高度正相关（０．５５５２）．也不断提高；２．５％跨长直观简便，与比强度、气纱品质正相关（０．６５６３、０．４２０８）．应始终作为重要指标。
The internal quality components of 30 cotton lines and their correlations were analyzed systematically. The absolute value of the correlation coefficient between micronaire and air quality was the highest (-0.6691), which was the first index of quality breeding. The specific strength and gas Yarn quality is highly correlated (0.5552). Also continuously improve; 2.5% cross-long intuitive and easy, and strength, quality of yarn is positively correlated (0.6563,0.4208). Should always be an important indicator.