摘要
以拉萨市当雄县土壤-牧草-家畜系统为对象,分别在暖季(7月)和冷季(12月)采集土壤、牧草、牦牛血液样品并测定其常量元素和微量元素含量,探讨矿质元素在土壤-牧草-家畜系统的动态变化及其相互关系,为冷季牦牛补饲过程添加矿质元素提供科学依据。结果表明:(1)冷-暖季草场土壤矿质元素含量存在显著差异(P<0.05)。其中暖季草场土壤中K、Na、Fe、Mn、Zn、Cu、Co和Se含量显著高于冷季草场(P<0.05),Ca和P的含量显著低于冷季牧场(P<0.05);(2)在暖季牧场牧草中K、P、Fe、Zn、Co和Se含量显著高于冷季草场(P<0.05),Na、Mn含量显著低于冷季草场(P<0.05),Ca和Cu含量在暖季和冷季草场之间无显著差异(P>0.05)。(3)暖季牦牛血清中P含量显著高于冷季(P<0.05),Na和Cu显著低于冷季(P<0.05),K、Ca、Fe、Mn、Zn和Se的含量在暖季和冷季之间无显著差异(P>0.05)。(4)暖季放牧草场,土壤与牧草中P和Se含量显著相关(P<0.05),牧草和牦牛血清中Ca、K、Fe和Se含量显著相关(P<0.05);冷季草场中,土壤和牧草Na含量显著相关(P<0.05),牧草和牦牛血清中仅有Se含量显著相关(P<0.05)。综上,冷暖两季草场土壤和植物的矿质元素含量变化较大,牦牛放牧管理要考虑季节更替引起的牧草矿质元素含量变化,在饲草中适量补充特定矿质元素以保障牦牛健康。
This study focuses on the soil-grass-livestock system in Dangxiong County,Lhasa City.Soil,grass,and yak blood samples were collected in both warm season(July)and cold season(December),which were analyzed to determine the levels of major elements and trace elements.The study aims to investigate the dynamic changes and correlations of mineral elements within the soil-grass-livestock system,and provide a scientific basis for supplementing mineral elements during the winter feeding process for yaks.The results showed that(1)there were significant differences in the contents of mineral elements in pasture soils between cold and warm-season(P<0.05).The contents of K,Na,Fe,Mn,Zn,Cu,Co and Se in warm-season pasture soils were significantly higher than those in cold-season pasture soil(P<0.05),while the contents of Ca and P in warm-season were significantly lower than those in cold season(P<0.05).(2)The contents of K,P,Fe,Zn,Co and Se of forages in warm-season were significantly higher than those of cold-season(P<0.05),the contents of Na and Mn were significantly lower than those of cold-season pasture(P<0.05),and neither Ca nor Cu content in forage showed a significant difference between warm-and cold-season pastures(P>0.05).(3)The P content of yak serum in July was significantly higher than that in December(P<0.05),the contents of Na and Cu of yak serum in July were significantly lower than those in December(P<0.05).However,the contents of K,Ca,Fe,Mn,Zn and Se did not show significant changes between warm and cold seasons(P>0.05).(4)In warm-season pastures,the contents of P and Se in soils correlate significantly with those in forage(P<0.05),additionally,the contents of Ca,K,Fe and Se elements of yak serum correlate significantly with those in forages(P<0.05).In cold-season pastures,Na contents in both soils and forage showed a significant correlation(P<0.05),and only Se content in forages and yak serum exhibited a significant correlation(P<0.05).In summary,substantial changes in mineral elements are found in pasture soils and forages between cold and warm seasons.Therefore,the variation in mineral elements due to season shifts should be taken into account in yak grazing management.It is important to supplement specific mineral elements in the forage to ensure the health of the yaks.
作者
白玛嘎翁
魏巍
周娟娟
多吉顿珠
鲍宇红
土登群配
Baima Gahong;WEI Wei;ZHOU Juanjuan;Dorjee Tenzin;BAO Yuhong;Tudeng Qunpei(Institute of Grass Science,Academy of Agriculture and Animal Husbandry,Tibet Autonomous Region,Lhasa,Tibet 850000,China)
出处
《家畜生态学报》
北大核心
2025年第5期44-50,共7页
Journal of Domestic Animal Ecology
基金
西藏自治区自然基金(2016ZR-15-58)
国家牧草产业技术体系拉萨综合试验站(CARS-34)。
关键词
高寒草甸
矿质元素
土-草-畜
相关性分析
alpine meadow
mineral elements
soil-grass-livestock
correlation analysis
