| 摘要: |
| 塿土中添加不同浓度的柠檬酸、酒石酸及草酸，在96h恒温培养过程中其有效磷含量均有增加。随加入酸的浓度增大，土壤中磷的活化率提高。土壤中添加的有机酸浓度分别为：4，8，12及20 mmol/kg土，磷素最大活化率分别为：耕层12.0％～95.2％；粘化层10.3％～199％。 |
| 关键词: 土，有机酸，速效磷 |
| DOI： |
| 分类号:S153.62 |
| 基金项目:国家自然科学基金资助项目 |
|
| Active Effect of Organic Acid on the Phosphorus of Calcareous Soil |
|
Qu Dong Wei Qingfeng Zhou Jianjun
|
| Abstract: |
| The available phosphorus content can increase during 96 hours constant incubation by adding different concentrations of citrate,tartar and oxalate acid to Lou soil.With the increase of the acid concentration,the active rate of phosphorus grows in soil.The added organic acid concentrations are 4,8,12 and 20 mmol/kg soil,respectively.The maximum active rate of phosphorus is from 12.0% to 95.2%at the tilth top and from 10.3% to 19.9 % at the argillic horizon. |
| Key words: Lou soil,organic acid,available phosphorus |
