| 低分子量有机酸对不同磷酸盐的活化作用 |
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| 引用本文： | 陆文龙,曹一平,张福锁.低分子量有机酸对不同磷酸盐的活化作用[J].华北农学报,2001,16(1):99-104. |
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| 作者姓名： | 陆文龙 曹一平 张福锁 |
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| 作者单位： | 1. 天津市土壤肥料研究所，天津 300192
2. 中国农业大学 植物营养 系，北京 100094 |
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| 基金项目： | 国家自然科学基金项目资助! ( 39790 10 0 ) |
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| 摘 要： | 用化学浸提法研究了有机酸对不同合成磷酸盐 (Ca2 -P、Ca8-P、Ca10 -P、Fe -P和Al-P)的活化作用。结果表明 :柠檬酸、草酸、酒石酸和苹果酸能明显促进不同磷酸盐中磷的释放 ;有机酸对磷酸盐的活化与有机酸种类、浓度和磷酸盐种类关系密切 ,磷酸盐的活化随着有机酸浓度的增加而增加 ,不同有机酸活化磷酸盐能力从大到小的次序为柠檬酸、草酸、酒石酸、苹果酸 ,不同磷酸盐活化的难易程度是Ca2 -P >Ca8-P >FePO4 >Ca10 -P >AlPO4 。
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| 关 键 词： | 低分子量有机酸 磷酸盐 磷活化 |
| 文章编号： | 1000-7091(2001)01-0099-06 |
The Effect of Low-molecular-weight Organic Aci dson Phosphorus Release from Different Phosphates |
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| LU Wen-long.The Effect of Low-molecular-weight Organic Aci dson Phosphorus Release from Different Phosphates[J].Acta Agriculturae Boreali-Sinica,2001,16(1):99-104. |
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| Authors: | LU Wen-long |
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| Abstract: | The chemical extraction was used to study the effect of organicacids on phosphorus release from differ ent synthetic phosphate compounds.It was indicated that phosphorus release was s ignificantly stimulated for all of 5 synthetic phosphate compounds tested,and po s itively correlated with the concentration of organic acid.The ability of organic acids in mobilizing phosphorus from synthetic phosphate followed the order:citr ic＞oxalic＞tartaric＞malic acid.The extent of phosphorus mobilized from synthet ic phosphate compounds followed the order:CaHPO4.2H2O＞Ca8H2(PO4)6 .5H2O＞FePO4.2H2O＞Ca10(PO4)6F2＞AlPO4.nH2O. |
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| Keywords: | Low molecular weight organic acids Synthetic phosphate compounds Mobilization |
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