生态环境学报2016，Vol.25Issue(5)：872-876,5.DOI:10.16258/j.cnki.1674-5906.2016.05.021
改性生物炭对菜地土壤磷素形态转化的影响
Effects of Modified Biochar on Soil Phosphorus Transformation in Vegetable Fields
摘要
Abstract
Biochar is a type of organic carbon of high carbon content and high stability, and it can significantly influence soil physical, chemical and biological properties. In this study, the effects of a new type of biochar on soil phosphorus (P) transformation and availability in the major vegetable soils in South China were investigated. The results showed that the resin P (resin-Pi), NaHCO3 extractable inorganic P (NaHCO3-Pi) and NaOH extractable inorganic P (NaOH-Pi) contents were increased; soil available P content was evidently elevated; diluted HCl extractable inorganic P (D.HCl-Pi) and concentrated HCl extractable inorganic P (C.HCl-Pi) contents were not significantly increased; NaHCO3 extractable organic P (NaHCO3-Po) content was increased; NaOH extractable organic P (NaOH-Po) content was decreased; residual P (residual-Pt) content was increased; and concentrated HCl extractable organic P (C.HCl-Po) content was not changed by biochar application. Correlation analyses showed that rapidly available P was significantly (P<0.05) related to resin-Pi, NaHCO3-Pi, NaHCO3-Po, NaOH-Pi, D.HCl-Pi and residual-Pt with the largest correlation coefficient of 0.9805 with NaHCO3-Pi; resin-Pi was significantly (P<0.01) related to NaHCO3-Pi and D.HCl-Pi; and NaHCO3-Pi was significantly (P<0.05) related to NaOH-Pi, D.HCl-Pi and residual-Pt with the largest correlation coefficient of 0.8166 with D.HCl-Pi. The results demonstrated that when biochar is applied, P of various species can transform to species of higher availability via mineralization.关键词
生物炭/菜地土壤/磷形态Key words
biochar/vegetable soil/phosphorus species分类
资源环境引用本文复制引用
王荣萍,余炜敏,梁嘉伟,廖新荣,詹振寿,李淑仪..改性生物炭对菜地土壤磷素形态转化的影响[J].生态环境学报,2016,25(5):872-876,5.基金项目
国家科技支撑项目（2014BAD14B05）；省院合作项目（2013B091500016）；广州市科技计划项目（201607010082）；广东省科技计划项目 （）
