生态学报2017，Vol.37Issue(9)：2935-2942,8.DOI:10.5846/stxb201601170111
烟气脱硫石膏对滨海农耕土壤磷素形态组成的影响
Influence of flue gas desulfurization gypsum on speciation of phosphorus in coastal cultivated soils
摘要
Abstract
To investigate the effect of the flue gas desulfurization gypsum (FGDG) on coastal cultivated soil,a field experiment was conducted to evaluate different application amounts at rates of 0,15,30,and 45 t/hm2.The effect of FGDG on soil total phosphorus (P),available P,and inorganic P fractions in coastal cultivated soils were measured.The results indicated that FGDG had no significant effect on soil total P in the cultivated soils.However,FGDG significantly reduced the soil available P and tile flow water soluble P.The inorganic P content was significantly increased by FGDG,especially calcium phosphorus (Ca8-P).The mean concentration of Ca8-P in the soil increased by 35.2％-66.3％,and the Ca1o-P concentration in the soil was increased by 7.3％-17.8％.The ability of Echinacea to absorb P was not affected by the reduction of available P or increased Ca-P in fractions of inorganic P in the soil.FGDG application promoted plant growth and development.Therefore,FGDG could effectively fix the soil available P,control the excessive P accumulation of soil,and reduce the risk of eutrophication of the surrounding water bodies.The results provide a guideline for a reasonable rate of FGDG application in coastal cultivated soils.关键词
烟气脱硫石膏/滨海农耕地/磷/无机磷组分,农业面源污染Key words
flue gas desulfurization gypsum/coastal cultivated soils/phosphorus/fractions of inorganic phosphorus/agricultural non-point source pollution引用本文复制引用
贺坤,李小平,周纯亮,周建,董珑丽,毛玉梅..烟气脱硫石膏对滨海农耕土壤磷素形态组成的影响[J].生态学报,2017,37(9):2935-2942,8.基金项目
国家环保公益性行业科研专项(201109023-2) （201109023-2）
上海市科委专项资助项目(15dz1207904) （15dz1207904）
