| 有机酸对石灰性土壤磷素的活化效应 |
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| 引用本文： | 曲 东,尉庆丰,周建军.有机酸对石灰性土壤磷素的活化效应[J].西北农林科技大学学报(社会科学版),1996,24(1):101-103. |
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| 作者姓名： | 曲 东 尉庆丰 周建军 |
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| 作者单位： | 西北农业大学，兰州兰化农林公司 |
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| 摘 要： | 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２０ｍｍｏｌ／ｋｇ土，磷素最大活化率分别为：耕层１２．０％～９５．２％；粘化层１０．３％～１９９％。
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| 关 键 词： | 土 有机酸 速效磷 |
Active Effect of Organic Acid on the Phosphorus of Calcareous Soil |
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| Qu Dong,Wei Qingfeng,Zhou Jianjun.Active Effect of Organic Acid on the Phosphorus of Calcareous Soil[J].Journal of Northwest Sci-Tech Univ of Agr and,1996,24(1):101-103. |
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| Authors: | Qu Dong Wei Qingfeng Zhou Jianjun |
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| Institution: | Qu Dong;Wei Qingfeng;Zhou Jianjun(Northwestern Agricultural University,Yangling,Shaanxi,712100) |
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| Abstract: | The available phosphorus content can increase during 96 hours constantincubation by adding different concentrations of citrate,tartar and oxalate acid to Lousoil.With the increase of the acid concentration,the active rate of phosphorus grows insoil.The added organic acid concentrations are 4,8,12 and 20 mmol/kg soil,respective-ly.The maximum active rate of phosphorus is from 12.0% to 95.2%at the tilth top andfrom 10.3%to 19.9 %at the argillic horizon. |
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| Keywords: | Lou soil organic acid available phosphorus |
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