摘要
为持续研究冀西北坝上地区豆禾混播对草地产草量及其品质的影响,本试验在国家牧草产业技术体系张家口综合试验站选择建植3年的豆禾同行混播草地,测定其产量和品质。结果表明:紫花苜蓿+无芒雀麦+垂穗披碱草(MWP)按豆禾比3∶7混播时,年干草产量最高,达9612.52 kg·hm-2,较单播紫花苜蓿提高了11.40%,较单播禾草提高了56.64%~61.80%;豆禾混播以MWP3∶7,MW5∶5组合CP、CF含量最高,MW3∶7、MWP3∶7酸性洗涤纤维(ADF)和中性洗涤纤维(NDF)含量最低,均与单播禾草之间差异显著;且MW3∶7第1茬、MWP3∶7第2茬牧草相对饲喂价值(RFV)与相对牧草品质(RFQ)显著高于其他混播处理及单播禾草。综上所述,豆科与禾本科在混播比例为3∶7,5∶5时产量与品质显著提升,以紫花苜蓿+无芒雀麦组合与紫花苜蓿+无芒雀麦+垂穗披碱草组合同行混播效果较好。
In order to continuously study the effects of legume-grass mixtures on hay yield and forage quality in Bashang Area of Northwest Hebei Province,the legume-grass mixtures sowing grassland setup sowed for 3 years in Zhangjiakou comprehensive test station of national forage industry technology system was selected,and its yield and quality were measured.The results showed that:in the third year of mixed sowing,the annual hay yield of Medicago sativa+Bromus inermis+Elymus nutans(MWP)according to the legume-to-grass ratio of 3∶7 was the highest,up to 9612.52 kg·hm-2,which was 11.40%higher than that of single sowing in the same year.Compared with the grass of single sowing,it was significantly increased by 56.64%to 61.80%;and the CP and CF contents of mixed sowing of legume and grass(3∶7)of MWP and MW(5∶5)were the highest,while the contents of acid detergent fiber(ADF)and neutral detergent fiber(NDF)of MW3∶7 and MWP3∶7 were the lowest,which were significantly different from those of the grass of single sowing.The relative feeding value(RFV)and relative forage quality(RFQ)of the first cutting of MW3∶7 and the second crops of MWP3∶7 were significantly higher than those of other mixed sowing and single sowing.To sum up,in the third year of mixed sowing,the yields and quality of legumes and gramineae were significantly improved when the mixed sowing ratios were 3∶7 and 5∶5.The mixed sowing of Medicago sativa+Bromus inermis as well as Medicago sativa+Bromus inermis+Elymus nutans were better.
作者
杜俊颖
李鑫洋
杨莉
宋连昭
周志明
李军
薛祝林
刘贵河
DU Jun-ying;LI Xing-yang;YANG Li;SONG Lian-zhao;ZHOU Zhi-ming;LI Jun;XUE Zhu-lin;LIU Gui-he(Hebei North University, Zhangjiakou, Hebei Province 075000, China;Zhangjiakou Grassland Supervision Station, Zhangjiakou, Hebei Province 075000, China;Kangbao County Bureau of Natural Resources and planning, Zhangjiakou, Hebei Province 075000, China)
出处
《草地学报》
CAS
CSCD
北大核心
2022年第7期1855-1861,共7页
Acta Agrestia Sinica
基金
财政部和农业农村部:国家现代农业产业技术体系项目(CARS-34)
河北省林业和草原科学研究项目“张家口坝上地区禾豆混播在草原生态修复中的应用研究”(2113055)资助。
关键词
豆科牧草
禾本科牧草
混播
草地生产力
Legume
Gramineous forage
Mixtures
Grassland productivity
