通江地区7个高粱属品种的生产性能及营养价值评价

Evaluation of production performanceand nutritional value of seven sorghum varieties in Tongjiang area

试验旨在筛选适宜通江地区种植的高粱属牧草品种,采用大田试验,对引进的7个优质品种的产草量、农艺性状和营养成分进行测定和评价。结果显示,7个品种在通江地区均能够正常生长,农艺性状、产草量及营养成分在各品种间均存在差异。蜀草1号株高最高,分蘖数最多;绿巨人茎粗、叶片数及叶宽极显著高于除阿尔托901外的其他品种(P<0.01);海牛叶长最长,节间长最短,茎叶比最小。阿尔托901的总鲜草产量最高,蜀草1号和绿巨人次之。绿巨人的干物质、可溶性糖含量和相对饲用价值最高,粗纤维和酸性洗涤纤维含量最低;蜀草1号的粗纤维含量较低,粗脂肪和磷含量最高;海牛的粗蛋白和粗灰分含量最高。综合评价发现,绿巨人平均隶属函数值最高,蜀草1号次之。研究表明,绿巨人和蜀草1号较适宜在通江地区栽培种植。

The purpose of this experiment is to screen the forage varieties of sorghum suitable for planting in Tongjiang area.Seven high-quality varieties were introduced in field experiment,and their grass yield,agronomic characters,and nutritional components were determined and evaluated.The results showed that all the seven varieties could grow normally in Tongjiang area,and there were differences in agronomic characters,grass yield,and nutrient components among them.Shucao No.1 had the highest plant height and the largest number of tillers.The stem diameter,leaf number,and leaf width of Lüjuren were extremely higher than those of other varieties except Aalto 901(P<0.01).Hainiu had the longest leaf length,the shortest internode length and the smallest stem-leaf ratio.Aalto 901 had the highest total fresh grass yield,followed by Shucao No.1 and Lüjuren.The content of dry matter,soluble sugar and relative feeding value of Lüjuren was the highest,while the content of crude fiber and acid detergent fiber was the lowest.The crude fiber content of Shucao No.1 was low,while the crude fat and phosphorus content were the highest.The content of crude protein and crude ash in Hainiu was the highest.Comprehensive evaluation showed that the average membership function value of Lüjuren is the highest,followed by Shucao No.1.The research shows that Lüjuren and Shucao No.1 are more suitable for cultivation in Tongjiang area.