Analysis Of Surplus And Deficiency Of Mineral Elements In Soil, Herbage And Grazing Sheep Serum In Tianjun County Of Qinghai Province

Appraisal of surplus and deficiency of mineral elements in soil、herbage andgrazing sheep serum of Tianjun county and soli-grass-livestock correlation amongmineral elements. Chose Xinyuan town,Kuaierma,Yangkang,Longmen and Zhouqunrural for experimental areas, collected soil,pasture and grazing sheep serum sampleof contents of5macro elements (K、Na、Ca、P、Mg)and4trace elements (Cu、Mn、Zn and Se) were determined, disussed surplus and deficiency and relation ofmineral elements in Tianjun county soil-grass-livestock grazing system.The resultsshowed that①Average levels of K、Na、Ca、P、Mg were6.57g/kg、5.06g/kg、0.69g/kg、1.42g/kg、9.24g/kg，and those of Cu、Mn、Zn、Se were16.28mg/kg、515.20mg/kg、64.60mg/kg和0.178mg/kg. Part mineral elements have obviousregional.Except for there were negatively correlated between Na and P,the restmineral elements were positive correlation.②Mineral elements of herbage existedsignificant difference in some areas and in different periods（P<0.01or P<0.05）, andThere were certain correlation among some mineral elements.③Most of serummineral elements of grazing sheep exsited difference in diffenent areas and periods(P<0.01or P<0.05)，but without significant correlation between some mineralelements in different periods (P>0.05).④A few mineral elements of soil andgrass， soil and livestock， grass and livestock exsited significantcorrelation(P<0.05).