Pérez D V, Alcantara S, Ribeiro C C, Pereira R E, Fontes G C, Wasserman M A, Venezuela T C, Meneguelli N A, de Macedo J R, Barradas C A A
Embrapa-Solos, R. Jardim Botânico, 1024, Rio de Janeiro (RJ), Brazil.
Bioresour Technol. 2007 Feb;98(3):525-33. doi: 10.1016/j.biortech.2006.02.025. Epub 2006 Mar 31.
The spread of composted municipal waste (CMW) on land can be used for sustainable crop production. Nevertheless, heavy metals availability may be a problem. Therefore, the main objective of this study was to assess the impact of CMW disposal on heavy metal accumulation in soil and plants. The treatments consisted of an untreated plot (control) and four rates of CMW application. All plots were cultivated in succession of carrot, cauliflower, sweet corn, and radish. Cu and Pb significantly accumulated in the topsoil (0-5 cm) with a similar pattern in the depths of 5-10 cm and 10-20 cm. Cauliflower, for Fe and Cu, and radish, for Pb and Cu, had their tissue analysis significantly affected due to the increasing rates of application of CMW. Nevertheless, the levels of accumulation in both, soil and plant, are within permissible limits. The evidences provided by this experiment indicated that heavy metals are less likely to cause problems for the estimation of CMW loadings to Brazilian agricultural land.
在土地上施用堆肥化城市垃圾（CMW）可用于可持续作物生产。然而，重金属的有效性可能是个问题。因此，本研究的主要目的是评估CMW处置对土壤和植物中重金属积累的影响。处理包括一个未处理的地块（对照）和四个CMW施用量。所有地块依次种植胡萝卜、花椰菜、甜玉米和萝卜。铜和铅在表土（0-5厘米）中显著积累，在5-10厘米和10-20厘米深度处具有相似的模式。由于CMW施用量的增加，花椰菜的铁和铜以及萝卜的铅和铜的组织分析受到显著影响。然而，土壤和植物中的积累水平均在允许范围内。本实验提供的证据表明，重金属不太可能给巴西农业用地的CMW负荷评估带来问题。
