In order to breed and select winter hulless barley varieties suitable for cultivation in forest-agriculture ecotones of the canyon in Eastern Qinghai-Tibetan Plateau, regional trials were carried out to evaluate the performance of 12 new autumn-sown winter hull-less barley varieties(or lines) at 7 sites in forest-agriculture ecotones of the canyon in Eastern Qinghai-Tibetan Plateau during2013—2015. As a result, the yield of the variety Yunluo 1 reached 353.0 kg/667 m~2, the highest among the 12 tested varie...