关键词: 排土场, 复垦, 土地质量

Abstract: In order to grasp the reclamation effect of the Zhongshan dump of Masteel Gushan Mining Company, the nutrients content and the heavy metals content in the surface soil before dump reclamation, the experiment potting soil matrix, the soil surface after reclamation and the plants were checked and analyzed. The results showed that the readily available nitrogen in land reclamation of Zhongshan dump was low, and the nitrogen fertilizer should be increased in following rehabilitation, or the nitrogen-fixing plants are widely planted. Although the heavy metal content in the original surface of Zhongshan dump exceeded the standard, the plants can grow up well. With the increase of land reclamation, the heavy metal content in agricultural land productivity exceeded the relative national standard since the heavy metals migrate from the soil into the plant. Therefore, to solve the migration of heavy metals should be focused at the following land reclamation.

Key words: Dump, Reclamation, Land quality