Abstract: In order to screen the suitable varieties of blueberry for cultivation in slightly acid soils,growth characteristics were determined according to the stem diameter,plant height,shoot biomass,shoot numbers,and canopy of 4 varieties of blueberry（‘Bluecrop’,‘Bluegold’,‘Berkeley’,‘Brigitta’）from Mashenqiao nursery of Jizhou. The results showed that the stem diameter of ‘Brigitta’was the longest（8.20 cm）,‘Bluegold’was the thinnest（3.80 cm）,the plant of‘Brigitta’was the highes（1.83 m）,followed by‘Berkeley’（1.65 m）,and then was‘Bluegold’（1.37 m）,‘Bluecrop’was the lowest（1.19 m）. The shoot diameter of‘Brigitta’was the biggest（25.11 cm）,followed by‘Bluegold’and‘Bluecrop’,which were 13.78 cm and 13.67 cm;‘Berkeley’ was the lowest,12.89 cm. The shoot numbers of‘Brigitta’was the highest（9.89）,followed by‘Bluecrop’and‘Bluegold’,which were 9.33 and 7.11.‘Berkeley’was the lowest（6.56）. The canopy of‘Brigitta’was the widest（1.43 m）followed by ‘Berkeley’ and‘Bluecrop’,which were 1.13 m and 1.37 m,‘Bluegold’was the lowest,1.07 m. The growth characteristic of the blueberries from strong to weak was‘Brigitta’,‘Berkeley’,‘Bluecrop’and‘Bluegold’in turn,according to the subordinate function.

Key words: blueberry, growth characteristics, variety, stem diameter, membership function