对全国863个A层土样分析结果表明:钼钨的中位数和几何均值很接近,频数分布接近对数正态分布.41个土类和34个省、市、自治区土壤中分布趋势一致,表现为南北低和东高西低的分异规律,但钨的趋势不如钼显著. The results of soil sample analysis of 863 A-levels in China show that the median and geometric mean values ​​of Molybdenum and Tungsten are very close, and the frequency distribution is close to logarithmic normal distribution. The distribution trend of soil in 41 soil types and 34 provinces, municipalities and autonomous regions is consistent , Showing the trend of differentiation of north and south and east and west low, but the trend of tungsten is not as significant as molybdenum.