| 塿土磷素淋移的形态研究 |
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| 引用本文： | 杨学云,古巧珍,马路军,孙本华,李生秀.塿土磷素淋移的形态研究[J].土壤学报,2005,42(5):792-798. |
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| 作者姓名： | 杨学云 古巧珍 马路军 孙本华 李生秀 |
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| 作者单位： | 杨学云（西北农林科技大学资源环境学院,陕西,杨凌,712100）;古巧珍（西北农林科技大学资源环境学院,陕西,杨凌,712100）;马路军（西北农林科技大学资源环境学院,陕西,杨凌,712100）;孙本华（西北农林科技大学资源环境学院,陕西,杨凌,712100）;李生秀（西北农林科技大学资源环境学院,陕西,杨凌,712100） |
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| 基金项目： | 国家野外台站试点站"国家土壤肥力与肥料效益监测网络"和西北农林科技大学"优秀人才基金"(04ZR020)资助 |
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| 摘 要： | 利用设在
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| 关 键 词： | 原状土柱 可溶性全磷 钼酸盐反应磷 颗粒磷 Olsen-P 磷淋失 |
| 收稿时间： | 9/6/2004 12:00:00 AM |
| 修稿时间： | 2004年9月6日 |
FORMS OF PHOSPHORUS LEACHING IN LOESSIAL SOIL |
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| Yang Xueyun,Gu Qiaozhen,Ma Lujun,Sun Benhua and Li Shengxiu.FORMS OF PHOSPHORUS LEACHING IN LOESSIAL SOIL[J].Acta Pedologica Sinica,2005,42(5):792-798. |
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| Authors: | Yang Xueyun Gu Qiaozhen Ma Lujun Sun Benhua and Li Shengxiu |
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| Institution: | College of Resource and Environment, Northwest Sci-Tech. Uru of Agri and Fores., Yangling, Shaanxi 712100, China;College of Resource and Environment, Northwest Sci-Tech. Uru of Agri and Fores., Yangling, Shaanxi 712100, China;College of Resource and Environment, Northwest Sci-Tech. Uru of Agri and Fores., Yangling, Shaanxi 712100, China;College of Resource and Environment, Northwest Sci-Tech. Uru of Agri and Fores., Yangling, Shaanxi 712100, China;College of Resource and Environment, Northwest Sci-Tech. Uru of Agri and Fores., Yangling, Shaanxi 712100, China |
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| Abstract: | Based on the soil phosphorus gradient obtained from two long-term stationary fertilizer experiments on loessial soil,an intact soil cores (20 cm in depth) experiment was conducted to study forms of phosphorus in leachate.The results show that phosphorus leached from loessial soil mainly in dissolved form(TDP),which accounted fur 82.5 percent of the total P(TP) in the leachate,and particulate phosphorus(PP) for only 17.9%.Molybdate reactive phosphoms(MRP),being a chief cnmponent of the dissolved phosphorus,constituted on average 77.1% of the total P in the leachate,whilst dissolved organic phosphorus (DOP) did 13.8%.The maximum TP concentration of the leachate reached to 3.95 mg L-1 and TDP 3.57 mg L-1,during the 60-day experiment with a sum irrigation rate of 357 mm in total,approximately equal to 36% of the total annual precipitation and irrigation.The maximum phosphorus loss by leaching was observed reaching to 1082 g hm-2.The results also indicated that MRP,TDP and TP concentrations of the leachate were significantly correlated with Olsen-P content of the plough layers. |
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| Keywords: | Intact soil core Total dissolved phosphorus Molybdate reactive phosphorus Particulate phosphoms Olsen-P Phosphorus leaching` |
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