常量矿物质元素含量是影响牧草质量的重要因素之一，本文对内蒙古阿拉善额济纳荒漠区60种牧草进行了这方面的分析研究。
Macro mineral elements content is one of the important factors effecting the herbage quality, 60species of herbage in Alashan desert district in Inner Mongolia were studied in this aspect.
80年代内蒙古考古研究所在黑城又发现了一些元钞，因此作者踏上了额济纳考察之路。
In 1980s Inner Mongolian Archeological Research Institute found some banknotes of Yuan Dynasty, when the author's study on Erjina began.
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