Effect of cutting on regeneration of three strains of Bromus ciliatus

In this experiment, regeneration performance of three strains of Bromus ciliatus was analyzed with different stubble height (0-2,2-4,4-6 cm) during the jointing stage. The results showed that the stubble height and regenerating speed of forage had significant positive correlation(r=0.724 1,P0.05), among which 4-6 cm (stubble height) of 9708 strain had faster regeneration speed and 0-2 cm (stubble height) of 9714 strain had lower regeneration speed. In same cutting treatments, the regeneration tillers of 9708 and 9714 strains had no difference (P0.05), and tillers of 9701 strain were higher significantly than other two strains when the second stubble height was 4-6 cm. With stubble height increasing, total dry grass yield of 9701 and 9708 strains had a progressive increase, and the 9714 strain had a progressive decrease. The suitable stubble height of 9701 and 9708 strains was 4-6 cm and the height of 9714 was 0-2 cm.