华南农业大学学报2013，Vol.34Issue(2)：219-223,5.
黄石铁尾矿废弃地刺槐人工林土壤肥力研究
Study on Soil Fertility of a Robinia pseudoacacia Plantation in an Abandoned Iron Tailing Area in Huangshi
摘要
Abstract
Soil characteristics of a Robinia pseudoacacia plantation was investigated in an abandoned iron tailing area in Huangshi City to provide guidance for soil remediation of abandoned mine lands. Soil pH, organic matter, total N, total P, total K, alkali-hydrolyzable N, available P, and available K were determined by routine method, the number of diazotrophs and the phosphate-solubilizing bacteria number were determined by dilution plate method, and activities of soil urease, phosphatase and catalase were determined by colorimetry, disodium phenyl phosphate colorimetric method and titration with potassium permanganate , respectively. The contents of soil organic matter, total N, total P were 101. 5, 2. 8, 1. 5 g o kg-1 , and alkali-hydrolyzable N, available P, and available K were 130. 7, 16. 2, 201. 8 mg o kg-1 respectively in the soil of the R. pseudoacacia plantation, which were significantly greater than those of the abandoned iron tailing without vegetation, while total K was lower by 13. 7% compared with the control. The number of diazotrophs and phosphate-solubilizing bacteria were 75.0 × 105 and 85.7 × 105 cfu o g-1 respectively, and activities of urease, phosphatase and catalase were 2. 7 g o kg-1 o d-1 , 317. 6 mg o kg-1 o h-1 and 4. 6 mL o g-1 o h-1 , respectively, which were significantly greater than those of the controls. Soil structure of the abandoned iron tailing was improved and nutrient content was increased because of covering mixed substrate, which facilitated the colonization of R. pseudoacacia, and the growth of R. pseudoacacia further improved soil properties and facilitated the ecological restoration of abandoned iron tailing.关键词
铁尾矿渣/刺槐人工林/土壤肥力/生态恢复Key words
iron tailing/ Robinia pseudoacacia plantation/ soil fertility/ ecology restoration分类
农业科技引用本文复制引用
杨振意,许建新,薛立,许鹏波,吴彩琼,刘斌..黄石铁尾矿废弃地刺槐人工林土壤肥力研究[J].华南农业大学学报,2013,34(2):219-223,5.基金项目
国家科学技术部农业科技成果转化资金项目(2009GB2E020423) （2009GB2E020423）
