Abstract: The effects of planting densities and sowing dates on yield related traits of barely（Hordeum vulgare L.） variety Edamai 263 were investigated by field test. The results showed that planting density and sowing date had great effects on grain yield. And the effective tiller, regulated by planting density and sowing date, was the major factor that mostly influenced the yield of Edamai 263. To achieve high yield, the strategy should be raising the number of tiller, ensuring the panicle rate and grain filling. Based on the results, the suitable density was 2 400 thousand seedlings per hectare and the suitable sowing date was in late October.

Key words: barely（Hordeum vulgare L.）, Edamai 263, sowing date, planting density, grain yield