河南新密市新砦遗址的植硅石分析

Analysis of the Phytoliths from the Xinzhai Site in Xinmi City Henan

新砦遗址位于河南新密市东南方向的刘寨乡新砦村西北的台地上，南临双洎河，东临圣寿溪水，北面和西面为开阔平地，分布范围约70万平方米。如果加上新砦城址外壕所圈占的范围，遗址总面积达100万平方米。该遗址内文化堆积一般厚0．5～2．5米，主要的文化遗存分属于王湾三期文化、新砦期和二里头文化早期三个阶段，距今约4200-3750年。

Phytolith analysis in combination with previously published data of pollen-analysis and floatation is very helpful to revealing paleoclimatic condition and agricultural economy on the Xinzhai site of the Longshan to the Erlitou Culture periods. The analysis results show that it was warm and humid, with no distinct climatic change during the whole occupation of,the site, Foxtail millet cultivation was its economic mainstay in the early Xia period, and rice and wheat were planted complementally. Wheat planting had begun by the Longshan period and presented an upward trend at the site.