【摘要】 朔州市林科所试验地内在于 1990～ 2 0 0 0年 ,对全国 42个白榆种源进行了试验研究 ,通过分析确定了故原、五原、巍县、获加、杞县、集宁、霍邱、文登为最佳种源 ,为本区发展白榆确定了最佳种籽调拨区更多还原

【Abstract】 The experiment was conducted on Ulmus pumila.l from forty-two sites during nineteen ninety and two thousand in the experimental plot of ShuoZhou research institute of forestry science. The results showed that GuYuan county, WuYuan county, JiNing county, HuoQiu county and WenDeng county were the best seed sources. This provided the allocation sites of the best seeds for developing Ulmus pumila.l in local region.更多还原