中国草食动物科学2026，Vol.46Issue(3)：67-75,9.DOI:10.3969/j.issn.2095-3887.2025.00.080
混播比例与物种丰富度对青藏高原高寒区人工草地建植初期生产性能与营养品质的影响
Effects of Mixed Sowing Ratio and Species Richness on Productivity and Nutritional Quality at Early Establishment Stage of Artificial Grassland in Alpine Region of Qinghai-Tibet Plateau
摘要
Abstract
This study aimed to investigate the effects of leguminous and gramineous grasses with different mixed sow-ing patterns on the productivity and nutritional quality during the early establishment of artificial grassland in the alpine region of Qinghai-Tibet Plateau,and to identify optimal mixed combinations for high yield and superior quality in this area.This field experiment was conducted in Kajiaman town,Hezuo city,Gansu province(altitude 2 680 m).Medicago sativa,Onobrychis viciifolia,Phleum pratense,Elymus dahuricus,Bromus inermis Leyss,and Lolium perenne were used as test materials,and mixed sowing treatments with varying species richness(1,2,4,and 6 species)and ratios of leguminosae to gramineae(7:3,5:5,3:7)were set up,with monocultures as controls.Plant height,fresh and dry for-age yield and nutrient yield were measured in the second year after establishment(2023).The results showed as fol-lows:① The total annual hay yield of 6 grasses mixed sowing with leguminosae to gramineae ratio of 5:5(A2 treat-ment)and 4 grasses(Onobrychis viciifolia+Medicago sativa+Elymus dahuricu+Lolium perenne)mixed sowing with le-guminosae to gramineae ratio of 5:5(B2 treatment)was significantly higher than that of monoculture(P<0.05).In the first cut,the treatment A2 achieved the highest hay grass yield,reaching 0.702 kg/m2;in the second cut,the treatment B2 had the highest hay grass yield of 1.415 kg/m2.②Interspecific competitiveness analysis indicated that Lolium pe-renne,Medicago sativa,and Phleum pratense exhibited significant competitive advantages.③The nutrient yield per unit area of mixed sowing treatment was higher than that of monocropping.Among them,treatments A2 and B2 showed relatively high crude protein yields in the first cut,while treatment B2 had the highest crude protein yield in the second cut(257.659 g/m²).In conclusion,when establishing artificial grasslands in the alpine region of Qinghai-Tibet Plateau,the mixed sowing pattern with multiple species(4-6 species)and a 5:5 leguminosae-gramineae ratio can achieve high yield and high quality in the early establishment stage.关键词
混播/物种丰富度/青藏高原高寒区/干草产量/营养物质产量Key words
mixed sowing/species richness/alpine region of Qinghai-Tibet Plateau/dry forage yield/nutrient yield分类
农业科技引用本文复制引用
宁宝山,邱作金,于冬亮,张晓丽,王芊,魏育新,张朝祥,杨巨海,武慧娟..混播比例与物种丰富度对青藏高原高寒区人工草地建植初期生产性能与营养品质的影响[J].中国草食动物科学,2026,46(3):67-75,9.基金项目
省级生态文明建设重点研发项目(24YFFH001) （24YFFH001）
甘肃省林草局自列科技项目(2023kj51,2024kj029) （2023kj51,2024kj029）
武威市科技计划B类项目(WW24B01NY055) （WW24B01NY055）
