筛选富集 meaning in Chinese

enriching by screening

In order to choose the plants that were hypertolerant to heavy metals and for the case of phytoremediation of soils that were polluted by heavy metals , the research was carried out by the methods of soil - planting and sand - planting in green - house . the study includes selecting the hypertolerant plants from 36 dominant species found in the vicinity of a pb / zn mine tailings pond , observing the ecophysiological response of the hyperaccumulators , improving - impact of hyperaccumulators on biosolds and examining the effect of nutrient elements ( n p k ) on the lead uptake
为选择和筛选富集重金属或对重金属具有耐性的植物，以达到利用植物修复重金属污染土壤的目的，本研究通过温室砂培和土培的方法，对生长于铅锌尾矿区的36种植物进行了筛选，研究了富集植物品种对重金属pb的生理生态效应、对重金属pb的吸收和耐性以及对污泥的响应，并探讨了土壤中的营养元素n 、 p 、 k对植物吸收pb的影响，为植物修复工作提供理论依据。