云南昭通地区天麻种植土壤中重金属元素差异性分析

Differential Analysis Heavy Metal Elements in Soil of Gastrodia elata BI. Planting in Zhaotong, Yunnan

摘要: 云南昭通具有得天独厚的自然地理条件，所产天麻质量优良，是中国人工种植天麻最早地区之一和全国天麻重要产地。本研究从云南昭通地区大关、镇雄、盐津、彝良四个种植基地采集天麻种植土壤样品，采用电感耦合等离子发射光谱(ICP)法对土壤样品中As、Cd、Cr、Cu、Pb、Ni 6种重金属元素进行了测定与分析。结果表明：不同种植基地中重金属元素含量差异明显，总体表现出根部重金属含量高于表面重金属含量，主成分分析说明Pb的因子载荷量在主成分中最大，体现出Pb在影响天麻表面土壤重金属元素富集评价的指标中起主要影响因子。

Abstract: Zhaotong is one of the earliest areas for artificial cultivation of Gastrodia elata in China and an important producing area of Gastrodia elata in China. This study from Zhaotong of Yunnan area four planting base (mark, male, YanJin, YiLiang town) to collect soil samples, using inductively coupled plasma emission spectrometry to soil samples As, Cd, Cr, Cu, Pb, Ni were determined. The results show that heavy metal element content in different planting base difference to be markedly, the overall performance of heavy metal content is higher than the roots of heavy metal content; on the surface of principal component analysis shows that the factor loading quantity in the main composition of Pb in the largest, reflecting the Pb of Gastrodia elata surface soil enrichment of heavy metals in the impact assessment index plays a main influence factors.