Steel Slag as an Iron Fertilizer for Corn Growth and Soil Improvement in a Pot Experiment

作     者：WANG Xian CAI Qing-Sheng WANG Xian and CAI Qing-Sheng College of Life Sciences, Nanjing Agricultural University, Nanjing 210095 (China). Department of Biology, Zhoukou Normal College, Zhoukou 466000 (China)

作者机构：College of Life Sciences Nanjing Agricultural University Nanjing 210095 （China） Department of Biology Zhoukou Normal College Zhoukou 366000 （China） 

出 版 物：《Pedosphere》 (土壤圈（英文版）)

年 卷 期：2006年第16卷第4期

页      面：519-524页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：Project supported by the National Natural Science Foundation of China (No. 30270800) 

主　　题：corn growth iron fertilizer pot experiment soil improvement steel slag 

摘      要：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.