7个牛鞭草品种(系)在成都平原的适应性及营养价值评价

Evaluation of the adaptability and nutritional value of seven Hemarthria cultivars(lines)in the Chengdu Plain

为研究来源不同的牛鞭草(Hemarthria)品种(品系)在亚热带平原地区的适应性和生产性能,筛选出适宜在成都平原地区种植的牛鞭草品种(系),开展了7个牛鞭草品种(系)的适应性评价试验。结果表明:‘川中(H248)’干草产量最高(3年均产32.39 t·hm–2),‘H203’产量最低(3年均产25.16 t·hm–2)。选取4个产量优异的品种(系)测定营养成分并进行灰色关联分析,其中‘雅安’营养价值高,‘H248’、‘H255’和‘H202’的营养价值良。综合干草产量和营养品质来看,‘川中(H248)’、‘雅安’、‘H255’表现优异,品质良好,适合在成都平原推广种植。

The aim of this study was to evaluate the adaptability and production performance of different sources of Hemarthria in subtropical plains and select the best cultivars(lines)in the Chengdu area.We carried out a comparative experiment of seven varieties(lines)of Hemarthria in the Chengdu plain.The results showed that in terms of hay production,the yields of‘H248’were the highest(the three-year average yield was 32.39 t·ha^–1),while the lowest was‘H203’(the threeyear average yield was 25.16 t·ha^–1).Regarding the nutritional quality,the gray correlation analysis revealed that‘Ya’an’showed the highest nutrient concentration,followed by‘H248’,‘H255’,and‘H202’.Taking together the hay production and the nutritional quality indicators,the performance and quality of H248,‘Ya’an’,and‘H255’were outstanding and suitable for planting in the Chengdu Plain.