湖南不同草地类植被的营养价值评价  

Evaluation of Nutrient Value for Vegetation in Different Grassland Class in Hunan Province

作　　者：何鹏亮 揭红东 朱宁静 赵龙 许妍 石玉玲 邢虎成[1,2] 揭雨成 HE Pengliang;JIE Hongdong;ZHU Ningjing;ZHAO Long;XU Yan;SHI Yuling;XING Hucheng;JIE Yucheng(Institute of Ramie,Hunan Agricultural University,Changsha 410128,China;Hunan Provincial Research Center of Engineering Technology for Grass Crop Germplasm Innovation and Utilization,Changsha 410128,China)

机构地区：[1]湖南农业大学苎麻研究所,湖南长沙410128 [2]湖南省草类作物种质创新与利用工程技术研究中心,湖南长沙410128

出　　处：《中国草地学报》2024年第11期141-150,共10页Chinese Journal of Grassland

基　　金：湖南草地牧草资源调查(2017FY100604-02);湖南省草食动物产业技术体系牧草种植与秸秆加工利用岗位专家专项(2019-2021);国家饲草与饲纤兼用作物资源分库(NCGRC-2020-48);华中地区主要经济作物气象灾害防控技术研发与产品创制(2019YFD1002205-3)。

摘　　要：为了探究湖南不同草地类植被的营养成分含量特征,并对其营养价值进行科学评价,以4种不同草地类植被为研究对象,测定植物干物质、粗蛋白、粗脂肪、粗纤维、粗灰分、无氮浸出物等营养成分含量,并运用灰色关联度法进行综合评价。结果表明:各草地类的干物质含量为26.44%~30.38%,粗蛋白含量为9.31%~12.03%,粗脂肪含量为1.88%~2.71%,粗纤维含量为29.00%~33.00%,粗灰分含量为10.28%~10.89%,无氮浸出物含量为43.15%~46.37%,山地草甸的干物质含量(30.38%)最高,低地草甸的粗蛋白含量(12.03%)最高,热性灌草丛的粗脂肪和无氮浸出物含量(2.71%和46.37%)最高,粗纤维含量(29.00%)最低,暖性灌草丛的粗灰分含量(10.28%)最低。各草地类的营养价值大小排序为:热性灌草丛>低地草甸>山地草甸>暖性灌草丛。In order to explore the characteristics of nutrient content of vegetation of different grassland types in Hunan and to evaluate the nutrient value scientifically,this research measured the contents of plant dry matter,crude protein,ether extract,crude fiber,crude ash,nitrogen free extract of vegetation from four different grassland class.The grey relational analysis was conducted for comprehensive evaluation.The results showed that the dry matter content of all grassland class was between 26.44%~30.38%,the crude protein content was between 9.31%~12.03%,the ether extract content was between 1.88%~2.71%,the crude fiber content was between 29.00%~33.00%,the Ash content was between 10.28%~10.89%,and the nitrogen free extract content was between 43.15%~46.37%.The dry matter content(30.38%)was the highest in mountain meadows.The crude protein content(12.03%)was the highest in lowland meadows.The ether extract and nitrogen free extract contents(2.71%and 46.37%)were the highest in tropical shrubland,whereas the crude fiber content(29.00%)was the lowest.The Ash content(10.28%)was the lowest in warm shrubs.The trend of nutritional value of different grassland class was tropical shrubland>lowland meadow>mountain meadow>warm shrubland.

关 键 词：湖南草地 营养生长期 营养成分含量 营养价值 灰色关联度法 

分 类 号：S812[农业科学—草业科学]