镉污染地改造中优选草坪草的层次分析法

The analytic hierarchy process of optimum lawny grass on the constructing cadmium-polluted land

以沈阳西郊镉污染农田的18种草坪草为例,选用平均株高、病害、分蘖株、全草平均镉含量4项指标,采用层次分析法优选了草坪草优良草种。结果表明,普特剪股颖、紫羊茅、赫尔德、碧玉、黑麦草等草种对镉富集能力较强,是改造镉污染地的优良草种。

Using the 18 varieties of lawny grass on the cadmium-polhted land in the west suburb of Shenyang City as an example, the analytic hierarchy process was used to optimize the best grass based on the indices of mean plant-helght, diseases, tillers, the grass mean cadmium content. In terms of the agricultural ecology engineering, the result provided a reference basis for the species of optimum lawny grass, which were capable of resisting and concentrating cadmium. The result showed that Agrostia stolonifera L. P1. , Festuca rubra L. , Lolium perrnne, etal, were suitable for concentrating cadmium and could be used for the cadmium-polluted area.