Abstract: The correlation data of yield traits of highland barley（Hordeum vulgare L.） at different altitudes were analyzed, and the average value and difference level of yield traits of different varieties were calculated. The average values of yield traits in different regions were calculated and multiple comparisons were made. The genetic variance, environmental variance and genetic-environmental interaction variance were estimated to compare the effects of heredity and environment on yield traits of hulless barley. The results showed that the grain number and 1000-grain weight of highland barley were significantly different in each variety. Yulong area environment is more conducive to effective spike and yield increase; 1 000-grain weight was mainly controlled by heredity, followed by gene-environment interaction, with the smallest environmental impact. Effective panicle, grain number, yield and other yield traits are greatly affected by the environment.

Key words: highland barley（Hordeum vulgare L.）, yield, effective panicle, number of solid grain, 1 000-grain weight, genotype-environment interaction