西北农业学报2025，Vol.34Issue(5)：817-825,9.DOI:10.7606/j.issn.1004-1389.2025.05.005
高海拔地区禾豆混播对土壤理化性质及饲草生长的影响
Effects of Mixed Sowing of'Baiyan No.7'and Leguminous Forages on Forage Yield and Soil Physical and Physicochemical Properties in a High-Altitude Region
摘要
Abstract
This study investigate the effects of mixed sowing of thegramineous forage'Baiyan 7'with legume forages on forage growth,yield quality,as well as soil enzyme activity and soil nutrient content in a high altitudeh forage region(4 000 m).The findings are significant for maintaining the grass-livestock balance in alpine pastoral areas.'Baiyan No.7'was mixed with three types of leguminous forages under two different sowing ratios.Four monoculture treatments served as controls.The affilia-tion function method was used for a comprehensive evaluation to identify the optimal mixed-sowing combination for the region.The results showed that the mixed sowing of B6 and B4 treatments had better plant growth,with significant increases in plant height,crown,single leaf mass,leaf area and SPAD values compared with the other treatments.Among the monoculture treatments,'Baiyan No.7'(A1)yielded the highest fresh biomass,reaching 46 500 kg·hm-2,while the B4 mixed treatment pro-duced the highest yield among the mixed-sowing treatments at 42 700 kg·hm-2.In addition,the B4 treatment had significantly higher crude protein(16.50％)and crude fat contents(6.26％)than the other mixed sowing treatments.The soil enzyme activities of the mixed treatments were significantly higher than those of the monoculture treatments,and the soil nutrient contents of the mixed treat-ments were relatively balanced,and all of them were significantly higher than those of'Baiyan 7'monoculture,but most of the indexes were not significantly different from those of the legume forage monoculture.The comprehensive evaluation of the affiliation function indicated that the B4 treatment had a high affiliation function value of 0.71,which was excellent and of class Ⅰ.The B4 treatment had a high affiliation function value of 0.71,which was superior.In In conclusion,when'Baiyan 7'was mixed with Pisum sativum at a ratio of 4.5∶1,its forage yield,quality and soil properties in the for-age field are better than those of the other treatments.Therefore,this mixed sowing treatment is more suitable for widespread cultivation in high altitude areas(4 000 m).关键词
禾豆混播/产量品质/三江源地区/土壤酶活性/土壤养分Key words
Mixed sowing of gramineous and leguminous forages/Yield and quality/Sanjiangyuan re-gion/Soil enzyme activity/Soil nutrients引用本文复制引用
吕亮雨,施建军,蔡宗程,刘青青,苗金花,赵筱妍,王玥,保善存..高海拔地区禾豆混播对土壤理化性质及饲草生长的影响[J].西北农业学报,2025,34(5):817-825,9.基金项目
第二次青藏高原综合科学考察研究(2019QZKK1002) （2019QZKK1002）
青海省科技特派员专项(2024-NK-P24). Second Integrated Scientific Investigation Research on the Tibetan Plateau(No.2019QZKK1002) （2024-NK-P24）
Qinghai Provincial Science and Technology Specialist Program(No.2024-NK-P24). （No.2024-NK-P24）
