直接从广西南宁市凤凰纸业排污沟碱性土壤样品中抽提和分离纯化混合基因组DNA，所获得DNA的产量为每克土壤样品10～30μg。
The mixed genomic DNA were extracted and purified from alkalescence environmental samples directly in this study . The DNA yields that have been got ranged 10 to 30 μ g per gram of dry environmental sample .
凤凰沟