Abstract:

In order to solve the problem of soil quality of mine reclaimed land is lower, 5 kinds of fertility treatments were set in the simulation of land reclamation area, including organic fertilizer and inorganic fertilizer mixed (FM), inorganic fertilizer (F), organic fertilizer (M), planting green fertilizer (GF) and no fertilizer (CK). Through 3 years of location fertilization experiment, different fertilization treatments on soil physical and chemical properties and crop yield were researched. The results showed that the content of soil organic matter, N, P, K showed the stratification phenomenon, which was lower in sub-surface layer (L2) with depth 20-40 cm than that in the surface layer (L1) with depth 0-20 cm. The effect of fertilization treatments on soil fertility were different, soil fertility level was in order of FM>F>M>CK. The plant height and product were in order of FM>F>M>CK, which was same trend with soil fertility. Comprehensive analysis showed that the effect of the treatment of organic fertilizer and inorganic fertilizer mixed on soil fertility increase was obvious, which was effective method of improved soil fertility.