9个燕麦品种在晋北地区的生产性能及饲用价值综合评价

在晋北农牧交错区,以9个燕麦品种作为研究对象,观测其产草量、株高、穗长、穗粒数、穗粒重、千粒重等,并利用常规分析技术对3个营养性状指标进行测定分析,采用灰色关联度分析方法进行综合评价。结果表明：草莜1号、牧乐思、远杂一号3个品种在孕穗期至开花期的鲜、干草产量较高,开花期草莜1号的干草产量达9 000kg/hm ²以上;草莜1号的穗长最长,为24.56cm;牧乐思的穗铃数最大,达到84.64;远杂一号的穗粒数最多,为621.00;牧乐思和坝莜18号的穗粒重最大,分别为17.16和16.28g,与其他品种间差异显著;甜燕麦的千粒重最大,为44.03g,与其他品种间差异显著;9个燕麦品种的可消化干物质为63.62%~69.05%,干物质采食量为1.91%~2.22%;白燕2号的饲料相对值较高,为114.89,与甜燕麦无显著差异,但显著高于其他燕麦品种。综合分析结果表明, GL381、牧乐思和甜燕麦适宜作为牧草在该地区推广种植。

Comprehensive Evaluation of Production Performance and Feeding Value of 9 Oat Varieties in Northern Shanxi

In order to study suitable forage germplasm for the agro-pasture ecotone of northern Shanxi, fresh and dry (hay) yields, agronomic characters, nutrient content and feeding value of 9 oat varieties were assessed. Three nutritional traits were determined and analyzed by conventional analysis, and the comprehensive evaluation was carried out by grey relational analysis method. The results showed that the yields of fresh and hay of Caoyou No.1, Molasses and Yuanza No.1 were higher from booting stage to flowering stage, and the hay yield of Caoyou No.1 at flowering stage reached 9 000kg/hm ²; Caoyou No.1 had the longest ear (24.56cm); The number of bolls per spike of Molasses was the largest, up to 84.64; the number of grains per spike of Yuanza No.1 (621) was the most; the maximum grain weight per spike of Molasses and Bayou No.18 were 17.16 and 16.28g, respectively (P<0.05); the 1000-grain weight of sweet oat (44.03g) was the largest, and the difference between the other species was significant (P<0.05). The digestible dry matter of varieties changed from 63.62% to 69.05% and dry matter intake from 1.91% to 2.22%; the relative feed value of Baiyan No.2 was the highest, up to 114.89, and no significant difference with sweet oat, but significantly higher than other oat varieties (P<0.05). The comprehensive analysis showed that GL381, Molasses and Sweet oat which were more suitable for planting in this area.