TY - Journal of Ecology and Rural Environment A1 - LIU Yuan, XU Ren-Kou T1 - Effect of Nitrogen Forms on Aluminum Toxicity to Soybean (Glycine max ) and Aluminum Speciation on Root Surface Y1 - 2015-03-25 JF - Journal of Ecology and Rural Environment JO - Journal of Ecology and Rural Environment SP - 223 EP - 229 VL - 31 IS - 2 UR - http://www.ere.ac.cn N1 - 10.11934/j.issn.1673-4831.2015.02.0013 ER -