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以土壤-牧草-牦牛矿物系统为研究对象,采集土壤、牧草、牦牛血液为样品,对其矿物元素(氮,镁,硫,铜,锰,锌,硒和钼)的含量和季节动态变化进行分析研究。结果表明:季节因素可引起矿物元素在土壤-牧草-牦牛系统中的相关性的变化。(1)土壤中镁、铜和锰的缺乏可能会引起牦牛对该元素的缺乏,进而影响正常的生产性能和生理功能。(2)牧草中矿物元素的含量具有明显的季节性变化。在生产中补充矿物质营养舔砖可满足牦牛对矿物质的需求,提高牦牛生产力和健康水平具有重要意义。(3)放牧牦牛存在广泛的缺氮、镁、铜、硒、锰、锌和钼。因此,放牧生产中以添加矿物质舔砖来满足牦牛矿物质营养,促进牦牛健康生产。
Taking the soil-pasture-yak mineral system as the research object, the soil, grass and yak blood were taken as samples and the content and seasonal dynamic changes of mineral elements (nitrogen, magnesium, sulfur, copper, manganese, zinc, selenium and molybdenum) Analysis. The results show that seasonal factors can cause the variation of mineral elements in the soil-pasture-yak system. (1) The lack of magnesium, copper and manganese in the soil may cause the lack of this element in the yak, thereby affecting normal productive performance and physiological functions. (2) The content of mineral elements in forage grass has obvious seasonal changes. It is of great significance to supplement mineral nutrition lick bricks in production to meet the demand of yak for minerals and improve yak productivity and health. (3) Grazing yaks have a wide range of nitrogen deficiency, magnesium, copper, selenium, manganese, zinc and molybdenum. Therefore, grazing production to add mineral licks brick to meet the yak mineral nutrition, promote yak healthy production.