干热区紫花苜蓿的生产性能和营养价值评价  

Evaluation of productivity performance and nutritional value of Medicago sativa in the dry-hot valleys

作　　者：龙会英[1,2] 张德 LONG Huiying;ZHANG De(Tropical Eco-agriculture Research Institute,Chuxiong 675000,Yunnan,China;Yuanmou Dry-Hot Valley Botancal Garden,Yuanmou 651300,Yunnan,China)

机构地区：[1]云南省农业科学院热区生态农业研究所,云南楚雄675000 [2]元谋干热河谷植物园,云南元谋651300

出　　处：《草业科学》2024年第1期117-125,共9页Pratacultural Science

基　　金：云南省技术创新人才培养项目(2011CI066);彝乡产业技术领军人才项目(楚政发【2021】6号);2022年云南省专家基层科研工作站(209)资助项目。

摘　　要：在云南省干热河谷区,以不同紫花苜蓿(Medicago sativa)品种(系)作为研究对象,应用方差和灰色关联度的分析方法对其生产性能及营养成分进行综合评价。结果表明,8个品种(系)的一级分枝数和水分有明显差异。所有参试材料在2018年和2020年每年可刈割8次,2019年为9次。6号苜蓿品种‘南苜701-特克拉’的年均干草产量最高,达到29589.96 kg·hm^(-2),显著高于5号‘四季旺’和8号‘德钦’(P<0.05)。在2018年,8个苜蓿品种(系)产量在4个季度中从高到低的排列顺序为第3季度>第2季度>第4季度>第1季度。所有供试材料的粗纤维、粗脂肪、粗灰分、全钙、无氮浸出物差异均不显著(P>0.05)。8号品种‘德钦’的粗蛋白含量(21.43%)、粗灰分(10.16%)和全磷含量(0.25%)均最高,粗纤维含量最低(18.36%)。经灰色关联度分析表明,‘热引41号紫花苜蓿’‘德钦’‘多叶’和‘WL525HQ’的综合表现较好,在该地区具有较高的推广利用价值。Different varieties of alfalfa(Medicago sativa)from the dry-hot valley region of the Yunnan Province were used in this study.The variance and grey correlation analyses were performed to evaluate the production performance and nutritional composition of M.sativa.The results showed that there was a significant difference(P<0.05)for the 8 varieties(lines)in the number of first-level branches and moisture.All test materials could be cut eight times per year in 2018 and 2020 and nine times in 2019.Variety No.6‘Nanmuxu 701-Tequilla’had the highest average annual hay yield of 29589.96 kg·ha^(-1),which was significantly higher than that of Variety No.5‘Siriver’and No.8‘Deqin’(P<0.05).The order of yield of the 8 alfalfa varieties(lines)from highest to lowest across four quarters is as follows:third quarter>second quarter>fourth quarter>first quarter in 2018.The content of crude fiber,crude fat,crude ash,calcium,and nitrogen-free extract of all the test materials was not significant.‘Deqin’had the highest crude protein(21.43%),crude ash(10.16%),total phosphorus content(0.25%),and lowest crude fiber content(18.36%).The result of the grey correlation analysis showed that M.sativa‘Reyin-41’‘Deqin’‘Multi-leaf’,and‘WL525HQ’had better general performance and a higher value for promotion in this region.

关 键 词：紫花苜蓿 生产性能 产量性状 灰色关联度 营养价值 综合评价 干热河谷 

分 类 号：S541.9[农业科学—作物学]