| 长期定位施肥对黑垆土剖面养分分布特征的影响 |
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| 引用本文： | 樊军,郝明德,党廷辉. 长期定位施肥对黑垆土剖面养分分布特征的影响[J]. 植物营养与肥料学报, 2001, 7(3): 249-254. DOI: 10.11674/zwyf.2001.0302 |
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| 作者姓名： | 樊军 郝明德 党廷辉 |
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| 作者单位： | 1.中国科学院水利部水土保持研究所;西北农林科技大学水土保持研究所 陕西杨陵712100 |
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| 基金项目： | 国家自然科学基金重大项目(49890330)资助. |
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| 摘 要： | 对黄土高原旱地 15年连续施肥后土壤剖面养分分布的研究发现 ,施化肥对土壤剖面有机质、全N、全P含量的影响深达 100cm以下 ,所有施肥处理有机质、全N、全P、NO3--N、有效P含量在耕层 (0～20cm)都有不同程度增加 ;40～60、60～80cm土层有机质、全N、全P都低于长年不施肥处理 ,造成土壤下层养分的亏缺。长期大量施用氮肥造成N素养分下淋累积 ;长期大量施用磷肥土壤耕层有效P显著提高 ,而 20cm以下土层变化不大。
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| 关 键 词： | 黑垆土 剖面养分含量分布 长期施肥 |
| 文章编号： | 1008-505(2001)03-0249-06 |
| 修稿时间： | 2000-04-17 |
Effect of long-term fertilization on nutrient distribution in profiles of black loessial soil |
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| FAN Jun,HAO Ming de,DANG Ting hui. Effect of long-term fertilization on nutrient distribution in profiles of black loessial soil[J]. Plant Nutrition and Fertilizer Science, 2001, 7(3): 249-254. DOI: 10.11674/zwyf.2001.0302 |
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| Authors: | FAN Jun HAO Ming de DANG Ting hui |
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| Affiliation: | 1.Inst of Soil and Water conservation;CAS;Northwestern Sci tech Unev YangLing;Shaanxi 712100;China |
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| Abstract: | Nutrient distributions of the profiles of black loessial soil were studied after N and/or P were applied for 15 years continuously The results showed that organic matter, total N, total P, NO3--N, Olsen P of fertilization treatments were increased in the 0～20cm soil layer and nutrient contents of 0～20cm and 20～40cm layers were higher than that of CK, which leads to lack of nutrient content Higher N rate applied to result the accumulation of NO3--N leaching Higher P applied to increase the Olsen P content in the 0～20 soil layer remarkably, but not to effect on Olsen P under the 20cm depth |
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