中国草地学报2025，Vol.47Issue(2)：70-79,10.DOI:10.16742/j.zgcdxb.20240143
不同补播量和施肥量对退化草地牧草营养品质和产量的影响
Effects of Reseeding Rates and Fertilization Levels on Nutritional Quality and Yield of Forage in a Degraded Grassland
摘要
Abstract
In order to identify the most appropriate management practice in degraded grasslands,a com-pletely randomized design was used to determine effects of different forage species(Elymus sibiricus,Agropy-ron cristatum,Elymus nutans,and Medicago sativa),reseeding rates(0,12.54,16.72 and 20.90 kg/hm2)and fertilization rates(0,53.73,107.46 and 161.49 kg/hm2 dry cow dung)on forage nutritional quality and yield.The results showed that different management methods significantly changed dry matter,crude protein,neutral detergent fiber,acid detergent fiber,organic matter,crude fat,and gross energy in a degraded grassland(P<0.05).The hay yield and nutritional quality of forage were significantly higher after M.sativa(a legume)reseeding compared to Poaceae species reseeding(P<0.05)in degraded grass-land.The hay yield and nutritional quality of forage were improved significantly with the increasing of reseeding rates and fertilization levels(P<0.05).In conclusion,the comprehensive nutritional value in the degraded grassland was the highest when reseeding with M.sativa at 20.90 kg/hm2 and fertilized with dry cow dung at 53.73 kg/hm2.关键词
补播/施肥/退化草地/牧草产量/营养品质Key words
Reseeding/Fertilization/Degraded grassland/Forage yield/Nutritional quality分类
农业科技引用本文复制引用
郭楠,高立杰,刘建,王云玲,高明,敖特根白音,姜塽,关曾根,袁辉,孙国通..不同补播量和施肥量对退化草地牧草营养品质和产量的影响[J].中国草地学报,2025,47(2):70-79,10.基金项目
河北省科学技术厅重点研发计划项目"坝上草畜耦合修复退化草地生态技术模式研究"(22327508D) （22327508D）
河北省现代农业产业技术体系建设专项资金(HBCT2023160202) （HBCT2023160202）
