Abstract:

In order to improve the yield of the mixture artificial grassland of oat and vetch. This study was conducted at the Lanzhou scientific observation and experiment field station of ministry of agriculture for ecological system in Loess Plateau Areas. The results showed it was the most suitable mixture that the treatment of Avena sativa cv. Danmark 444 of 50% and Vicia sativa cv. 333/A of 50%, the above-ground biomass, seed yield and the underground biomass from 0-50 cm soil layer were all the highest, above-ground biomass was 22193.33 kg/hm2, seed yield was 4776.67 kg/hm2, underground biomass was 11792.90 kg/hm2, and the difference was significant compared with other treatments (P<0.05). The mixture model had good synergistic effect and could be used for application and extension in the Loess Plateau and the similar area.