Steel slag as an iron fertilizer for corn growth and soil improvement in a pot experiment

作者：Wang Xian; Cai Qing Sheng^*

来源：Pedosphere, 2006, 16(4): 519-524.

DOI：10.1016/S1002-0160(06)60083-0

• corn growth
• iron fertilizer
• pot experiment
• soil improvement
• steel slag

The feasibility of steel slag used as an iron fertilizer was studied in a pot experiment with corn. Slag alone or acidified slag was added to two Fe-deficient calcareous soils at different rates. Results showed that moderate rates (10 and 20 g kg(-1)) of slag or acidified slag substantially increased corn dry matter yield and Fe uptake. Application of steel slag increased the residual concentration of ammonium bicarbonate-diethylenetriamine pentaacetic acid (AB-DTPA) extractable Fe in the soils. The increase of extractable Fe was usually proportional to the application rate, and enhanced by the acidification of slag. Steel slag appeared to be a promising and inexpensive source of Fe to alleviate crop Fe chlorosis in Fe-deficient calcareous soils.

• 出版日期2006-8
• 单位南京农业大学; 周口师范学院