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低分子量有机酸对不同合成磷源的释磷效应
引用本文:庞荣丽,介晓磊,谭金芳.低分子量有机酸对不同合成磷源的释磷效应[J].河南农业科学,2006(1):64-67.
作者姓名:庞荣丽  介晓磊  谭金芳
作者单位:1. 中国农业科学院郑州果树研究所,河南,郑州,450009
2. 河南农业大学,河南,郑州,450002
摘    要:采用化学浸提法,研究5种低分子量有机酸(草酸、柠檬酸、酒石酸、苹果酸、乙酸)对不同合成磷源的释磷效应。结果表明:供试有机酸均能促进不同合成磷源(DCP、OCP、FA、Fe-P、Al-P)中磷素的释放;其释磷效果与有机酸的种类和浓度有关,强弱顺序依次为柠檬酸、草酸>酒石酸、苹果酸>乙酸,有机酸浓度越高其释磷效果越好;有机酸与氟磷灰石(FA)反应后,溶液pH值升高,且低浓度条件下pH值变化较大,而高浓度条件下pH值变化较小。

关 键 词:低分子量有机酸  合成磷源  释磷效应
文章编号:1004-3268(2006)01-0064-03
收稿时间:2005-08-04
修稿时间:2005年8月4日

The Influence of Low-molecular-weight Organic Acids on Phosphorus P Release from Synthesized Phosphates
PANG Rong-li,JIE Xiao-lei,TAN Jin-fang.The Influence of Low-molecular-weight Organic Acids on Phosphorus P Release from Synthesized Phosphates[J].Journal of Henan Agricultural Sciences,2006(1):64-67.
Authors:PANG Rong-li  JIE Xiao-lei  TAN Jin-fang
Institution:1. Zhengzhou Fruit Institute, Chinese Academy of Agriculture Sciences, Zhengzhou 450009; 2. Henan Agricultural University, Zhengzhou 450002,China
Abstract:The influence of low-molecular-weight organic acids(oxalic acid,citric acid,malic acid,tartaric acid and acetic acid) on phosphorus release from synthesized phosphates was studied with chemical extraction.The main results were as follows:organic acids improved phosphorus release from different synthesized phosphate compounds(DCP,OCP,FA,Fe-P and Al-P);The mobilization of phosphorus by organic acids varied with the types and concentrations of organic acids and the solubility of phosphates,the effect of organic acids on mobilizing phosphorus was in the order of oxalic acid,citric acid> malic acid,tartaric acid> acetic acid,and the extent of mobilizing increased with increment of organic acid concentration for the same organic acid;the pH-value become higher after organic acids improved phosphorus release from FA,and variance of pH-value is little under low-concentration but lot high-concentration.
Keywords:Low-molecular weight organic acid  Synthetic phosphate compounds  Release of Phosphorus
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