关键词: 耕地, 耕地, 土壤肥力, 质量, 酸化, 持续农业

Abstract: In southern Loess Plateau, approached the distributed status of heavy metals in terrace field in gullied-hilly area, discovered the soil contents of Cu come within critical value, and the soil content of other heavy metals such as Hg, As, Cr, Ni and Zn can reach the first soil quality standard. In the area, it was found that heavy metals’ content in soil did not fit general regularity. With the growth of planting time, the contents of heavy metals accumulated and reduced with increasing of gradient. The contents of Hg, Cu, Zn, Ni and As in top soil of orchard terrace were bigger than those of cornfield and sloping field, but the content of Cr of cornfield was bigger than that of sloping field and orchard terrace. The results showed the heavy metal was easily accumulated in level terrace, especially in the orchard terrace. Monitoring and cure of soil quality should be studied to instruct apple and grain industry development continually on the Loess Plateau.