Effects of sowing rate and stubble height on the yield and quality of Elymus sibiricus

In order to study the influence of different sowing rate and stubble height on the yield and quality of Elymus sibiricus, this experiment analyzed the regeneration performance, yield and quality traits including crude protein, acid detergent fiber (ADF) and neutral detergent fiber (NDF) of E. sibiricus under different treatments with 3 different sowing rates and 5 different stubble heights. The results showed that the sowing rate had very significant effects (P0.01) on regrowth performance, biomass, yield of crude protein, content of ADF and NDF, and had no significant influence on content of crude protein. The plants performed best in the S2(45 kg·hm-2) treatment based on these indices. The stubble height had very significant effects (P0.01) on the tested indices which performed best in the H6(6 cm). The interactions between different sowing rate and stubble height had very significant effects (P0.01) on regrowth intensity, biomass and ADF content. In conclusion, the best cultivate method of E. sibiricus in Sunan was sowing rate with 45 kg·ha-1 and stubble height at 6 cm.