Abstract

In this work, we investigated the morphological effect of dichloromethane (DCM) on alfalfa (Medicago sativa) plant. We studied in vitro the influence of its concentration on alfalfa germination. The plants were placed in pots for 15 weeks, and exposed to increasing concentrations of DCM (50 µg L⁻¹ and 84 mg L⁻¹). In addition, we examined the effect of two manures (cow and sheep), which were applied to a contaminated soil, on alfalfa plant growth. The effect of the presence of dichloromethane is obvious even in plant–soil manure system. In fact, in the event of contamination, the soil–cow manure mixture represents the best setting medium for the Alfalfa plant compared to other environments, regardless of the contamination level. Indeed, the presence of two types of manure does not allow the suppression of the inhibitory effect of dichloromethane on the mass of the dry matter of the aerial part which is 18.38% for the cow manure-amended soil and 13.96% for the sheep manure-amended soil.

摘要

在这项工作中，我们调查了二氯甲烷（苜蓿）对苜蓿（Medicago sativa）植物的形态学影响。我们在体外研究了其浓度对苜蓿萌发的影响。将植物放置在盆中15周，然后暴露于浓度不断增加的DCM（50 µg L ^-1和84 mg L ^-1）。此外，我们检查了两种肥料（牛和羊）对苜蓿植物生长的影响，这两种肥料分别施用于受污染的土壤。即使在植物-土壤肥料系统中，二氯甲烷的存在也很明显。实际上，在发生污染的情况下，与其他环境相比，无论污染水平如何，土壤-牛粪肥料混合物都是苜蓿植物的最佳凝固培养基。的确，两种肥料的存在不能抑制二氯甲烷对地上部分干物质质量的抑制作用，这对牛粪改良土壤为18.38％，对绵羊粪肥为13.96％。修正土壤。