中文摘要：

陕西横山杨界沙遗址是一处仰韶文化晚期的聚落遗址。本文是针对2010年杨界沙遗址浮选出土炭化植物种子的鉴定和分析。研究结果显示，仰韶晚期该地先民已经从事旱作农业生产，粟和黍是主要粮食作物；其中黍可能占据主要地位。此次浮选出的农作物炭化种子占全部发现的70％，指示了当时农业技术水平；另外，遗址C区F7的一个灶坑中出土的炭化猪毛菜种子可能表明先民将其作为燃料使用。

英文摘要：

This article focuses on the identification and further analysis of carbonized plant remains unearthed from the Yangjiesha Neolithic site at Hengshan County in Shaanxi Province in 2010. The plant remains recovered include the crops such as foxtail millet and broomcorn millet which comprised 70% of the archaeobotanical remains, indicating that the consumption of dry crops played an important role in the subsistence system. Moreover, broomcorn millet probably in a dominant position compared with foxtail millet. Otherwise the presence of seeds ofSalsola collina in the range indicates that these people exploited them for fuel, but this point awaits confirmation from other lines of evidence.