| 热带亚热带多雨湿润区旱地土壤氮肥淋溶损失模拟研究 |
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| 引用本文： | 姚建武.热带亚热带多雨湿润区旱地土壤氮肥淋溶损失模拟研究[J].生态环境,1999,8(4):2. |
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| 作者姓名： | 姚建武 |
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| 作者单位： | 广东省农科院土壤肥料研究所!广州，510640 |
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| 基金项目： | 农业部“九五”重点科技项目!95-03-01-01 |
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| 摘 要： | 用土柱研究旱地土壤60cm土体夏季的氮肥淋溶损失，结果表明，在土壤施尿素后35d内淋水350mm，在不产生泾流的条件下，淋失率平均为25．5％。还探讨了氮肥淋溶过程中的氮形态变化，以及施氮量和土层深度对氮肥淋浴损失的影响。
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| 关 键 词： | 旱地土壤 氮肥 淋溶损失 |
| 修稿时间： | 1999-10-20 |
Study on Nitrogen
Leaching Loss from the Soils in Dry Land in the Humid Region of Tropical and Subtropical
Zones |
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| YAO Jian-wu, AI Shao-ying, ZHOU Xiu-chong,LIU Guo-jian.Study on Nitrogen
Leaching Loss from the Soils in Dry Land in the Humid Region of Tropical and Subtropical
Zones[J].Ecology and Environmnet,1999,8(4):2. |
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| Authors: | YAO Jian-wu AI Shao-ying ZHOU Xiu-chong LIU Guo-jian |
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| Abstract: | The nitrogen leaching loss from the soils in dry land at different depths (20, 40 and 60 cm) of columns was studied. The results indicated that the nitrogen leaching loss was 25.5% in the 35 days of simulated precipitation after the application of urea and under the condition of no surface flow. The leaching process and nitrogen forms, and the effects of application rate and the depth of soils on nitrogen loss by leaching were also discussed in this paper. |
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| Keywords: | dry land nitrogen fertilizer leaching loss |
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