In order to obtain the information of Xinjiang cotton cultivars with comparative advantage

in this paper

the methods of judging analysis

cluster analysis and principal component analysis are used to classify and compare the 24 major cotton cultivars in Xinjiang in 2015.The results indicated that the comprehensive quality characteristics of 3 categories XLZ

XLZG or ZM showed differentia

especially between XLZ and XLZG or ZM;And there was a certain correlation between 14 quality indexes of main cultivars

with the stronger positive correlation between the count of impurity and the leaf grade

as well as the weaker between the count of impurity and the average length of the top half.The 24 cotton cultivars could be divided into 2 categories by K-means clustering method

and 5 or 3 categories by system clustering method.As a result

the classification of XLZG-32

XLZ-52

or XLZ-36 was described to be consistent;According to the F value of the comprehensive principal component

which is obtained from the principal component F1 to F4 through dimension reduction

the main cotton cultivars with comprehensive advantages can be ranked.In the top 15

category XLZG accounted for 60%

with largest comprehensive advantage

and the recommended cotton cultivars are XLZG-32

XLZ-48

XLZG-35

M-81-4 and XLZG-26.