甘南地区土壤-牧草-牦牛系统部分微量元素的 季节变化和盈缺分析

Analysis of Seasonal Variations and Surplus and Shortage of Partial Trace Elements in the Soil-Forage-Yak System in Gannan Region

微量元素是动物维持机体活动不可或缺的营养成分之一。为探究甘肃省甘南地区土壤-牧草-牦牛系统中部分微量元素的不同季节变化规律和盈缺状况,试验通过采集甘肃省甘南地区春、夏、秋3个季节中的土壤、牧草和牦牛血液样品,测量并分析系统中微量元素的变化状况。结果表明:春季、夏季、秋季3个季节中,甘南地区土壤、牧草和牦牛血清中的Cu和Se含量均处于缺乏状态。该研究明晰了甘南地区土壤-牧草-牦牛系统微量元素的盈缺现状,为甘南地区牧场管理、草地保护以及畜牧生产力的提高提供了理论依据。

Trace elements are one of the indispensable nutrients for animals to maintain body activities.In order to explore the seasonal variations and surplus and shortage of partial trace elements in the soil-grass-yak system in Gannan region,soil,grass and blood samples of yak during different seasons in Gannan region were collected determined and analyzed.Comparing the standards of different elements,the results showed that in the three seasons,the contents of Cu and Se in the soil,pasture and yak serum of Gannan region were in a lacking status.This study clarified the current status of trace element surpluses in the soil-grass-yak system in Gannan region,and provided a theoretical basis for pasture management,grassland protection and livestock productivity improvement in Gannan region.