关键词: 燕麦, 生产性能, 个体发育特征, 增长速率

Abstract: One comparative test of oats production performances was carried out at Haibei research station of alpine meadow ecosystem,which is located in Qinghai-Xizang(Tibatan)plateau, during growing season in 1993. A random block design with 3 replications was used. The twelve varieties that were introducted by this experiment had gained higher yields than that of Yellow oat which is a major localvariety. The differences of fresh yields among those oats were significant, which were proved by variance analysis and SSR test. These twelve varieties can be planted in this area extensively, but only sowing for harvested sohilage is suitable. The regression analysis between single tiller weight and other charters of oata in this test, Besides the leaves weight of single tiller, were all performed. The regression equations about the single tiller weight with the single spike weight, the single stem weight, the mean height of plants, the mean stem diameter and the tiller numbers of a plant were built. The regression coefficients of these equations were significant by t-test. The single stem weight was the largest part in the single tuller weigh. This was an important character in all performances of the oats. The comparisoion results of the high growth rates and the increase of rates of biomass in oat with some perennial gramineous grasses thatwere planted at the experimental area indicated that the former was significantly highe than the latter,thus, the higher accumulated yield of these varieties were obtained, thes was another important character in all performences of oat.

Key words: Oat, Performance, Individual development characters, Growth rate