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作 者:侯龙鱼 白文明[1] 任立飞 刘芳 李国才 刘亚红 孙海莲 田贵云 马宪新 张文浩[1] HOU Long-yu;BAI Wen-ming;REN Li-fei;LIU Fang;LI Guo-cai;LIU Ya-hong;SUN Hai-lian;TIAN Gui-yun;MA Xian-xin;ZHANG Wen-hao(State Key Laboratory of Vegetation and Environmental Change,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China;Inner Mongolia Caodu Forage and Animal Production Co.,LTDC,Hohhot 011500,China;Inner Mongolian Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;Baotou Teachers’College,Baotou 014030,China;Xieertala Farm Co.,LTDC,Hulun Buir State Farm,Hulun buir 021011,China)
机构地区:[1]中国科学院植物研究所植被与环境变化国家重点实验室,北京100093 [2]内蒙古草都草牧业股份有限公司,内蒙古呼和浩特011500 [3]内蒙古自治区农牧业科学院,内蒙古呼和浩特010031 [4]包头师范学院,内蒙古包头014030 [5]呼伦贝尔农垦谢尔塔拉农牧场有限公司,内蒙古呼伦贝尔021011
出 处:《西南民族大学学报(自然科学版)》2024年第2期119-124,共6页Journal of Southwest Minzu University(Natural Science Edition)
基 金:国家重点研发计划项目(2022YFF1302803);内蒙古自治区科技重大专项(2021ZD004502)。
摘 要:羊草是我国优质的乡土草种,在天然草地改良和人工草地建植中发挥着重要作用.本试验选择6个羊草种质材料(草都1号、草都2号、吉生1号、多伦羊草、海拉尔羊草、长岭羊草),2018-2022年在呼伦贝尔市连续开展4年的羊草小区试验,通过对比不同种质和种植年限羊草生长的农艺性状和饲草品质,评价和筛选适宜高寒地区羊草人工草地建植的种质.结果表明:种质对羊草饲草产量和品质均有极显著影响,草都1号羊草新材料4年平均产量和饲草品质(粗蛋白含量、相对饲用价值)均显著高于其他种质,4年平均干草产量达到10297 kg·ha^(-1),海拉尔羊草产量和品质最低;种植年限对饲草产量有显著差异,种植第4年产量最高,种植年限对粗蛋白含量无显著差异;密度和株高共同解释生物量变化的86.4%.因此,草都1号种质新材料最适宜在该气候区域羊草人工草地建植中应用.As a native forage in Inner Mongolian grasslands,Leymus chinensis plays important roles in restoration of degraded grass-lands and development of artificial pasture in northern China.Six Leymus chinensis germplasms(Caodu No.1,Caodu No.2,Jisheng No.1,Dunlun,Hailaer and Changling)were selected to evaluate the effects of germplasm and growing years on forage yield and quali-ty in the year of 2018-2022 in Hulun Buir City,China,and the agronomic characteristics(plant height,density and forage biomass)and forage qualities(crude protein,neutral detergent fiber,acid detergent fiber,relative feed value)were determined across 4 years.The results showed that germplasm had significant impacts on yield and quality of L.chinensis.The 4-year average yield and for-age quality(crude protein content,relative feed value)of the germplasm Caodu No.1 were significantly higher than other germ-plasms,with the 4-year average hay yield of 10297kg·ha^(-1),while the yield and quality of Hailaer germplasm were the low-est.Growing years had significant effects on forage yield,with the highest yield in the fourth year,while no significant effects of grow-ing years on crude protein content.Density and plant height jointly explained 86.4%variation of biomass changes.Therefore,the germplasm Caodu No.1 is an ideal germplasm for development of L.chinensis artificial pasture in alpine regions of northern China.
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