| 氮磷配合对土壤氮素径流流失的影响 |
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| 引用本文： | 张兴昌,郑剑英,吴瑞浚,翟连宁,马炳召.氮磷配合对土壤氮素径流流失的影响[J].土壤通报,2001,32(3):110-112. |
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| 作者姓名： | 张兴昌 郑剑英 吴瑞浚 翟连宁 马炳召 |
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| 作者单位： | 中国科学院、水利部水土保持研究所, |
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| 基金项目： | 国家自然科学基金(49871049),中国科学院"九五”特别支持项目(KZ95T-04-13),中国科学院"西部之光”项目和国家科技攻关专题(96-004-05-04)资助 |
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| 摘 要： | 大田试验研究结果表明 :增施N、P均能增加作物的产量和减少水土流失 ;当N、P用量分别达到 5 5 .2kgN/hm2 和 90kgP2 O5/hm2 时 ,泥沙有机质和全氮流失最少 ,流失量分别为 2 0 89和 1 75kg/km2 ;当N、P用量分别为 5 5 .2kgN/hm2 和 4 5kgP2 O5/hm2 时 ,土壤矿质氮流失最小 ,其流失量仅为 2 7.9kg/km2 ;作物对土壤氮素的吸收 ,可减少土壤氮素的流失 .
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| 关 键 词： | 氮肥 氮磷配合 土壤氮素流失 |
| 文章编号： | 0564-3945(2001)03-0110-03 |
| 修稿时间： | 2000年1月14日 |
Soil Nitrogen loss by erosion as affected by N and P fertilization |
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| ZHANG Xing-chang,ZHENG Jian-ying,WU Rui jun,et al..Soil Nitrogen loss by erosion as affected by N and P fertilization[J].Chinese Journal of Soil Science,2001,32(3):110-112. |
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| Authors: | ZHANG Xing-chang ZHENG Jian-ying WU Rui jun |
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| Abstract: | The field experiment of soil erosion was conducted. With increasing amounts of N and P fertilization, soil erosion and runoff yields are decreased gradually. Losses of soil organic matter and total nitrogen in sediment reached a minimum under the fertilization of 55 2kg N/ha ad 90kg P 2O 5/ha. However, when 55 2kg N/ha and 45kg P 2O 5/ha were used, soil available N loss was decreased to a minimum of 27 9kg/ha. The decrease in soil N loss in erosion was due to crop absorbing of soil N. |
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| Keywords: | N and P fertilizers soil erosion Soil N loss |
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