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| 坡面水分和养分渗透模拟研究 | |
| 引用本文： | 刘文国,王林权,张兴昌,邵明安,李林海.坡面水分和养分渗透模拟研究[J].西北农林科技大学学报(社会科学版),2003,31(Z1):68-72. |
| 作者姓名： | 刘文国 王林权 张兴昌 邵明安 李林海 |
| 作者单位： | 1. 杨凌职业技术学院,陕西,杨陵,712100 2. 西北农林科技大学,资源环境学院,陕西,杨陵,712100 3. 中国科学院,水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨陵,712100 |
| 基金项目： | 中国科学院重要方向课题(KSCX2-411) |
| 摘 要： | 利用室内人工降雨模拟装置,通过坡面小区试验,初步分析了黄绵土坡面上水分和养分的渗透规律。结果表明:由坡顶到坡脚,水分入渗深度和入渗量均增加,即坡脚水分含量高于坡顶;不同的养分其渗透能力有所差别,很容易在某一层富集,硝态氮入渗快、数量多,速效钾入渗慢、数量少;硝态氮迁移受水分运动影响明显,而速效钾受水分运动影响较小。 |
| 关 键 词： | 坡地 水分入渗 养分入渗 模拟研究 |
| 文章编号： | 1671-9387(2003)S0-0068-05 |
| 修稿时间： | 2003年3月31日 |
Simulating research on water and nutrient percolation and runoff down sloping land |
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| LIU Wen-guo,WANG Lin-quan,ZHANG Xing-changSHAO Ming-an,LI Lin-hai.Simulating research on water and nutrient percolation and runoff down sloping land[J].Journal of Northwest Sci-Tech Univ of Agr and,2003,31(Z1):68-72. | |
| Authors: | LIU Wen-guo WANG Lin-quan ZHANG Xing-changSHAO Ming-an LI Lin-hai |
| Institution: | LIU Wen-guo~1,WANG Lin-quan~2,ZHANG Xing-chang~2SHAO Ming-an~2,LI Lin-hai~2 |
| Abstract: | With the equipment for indoor artificial precipitation and the simulating experiments on sloping plots,the moisture and nutrients permeation laws of loessal sloping land are analyzed primarily.The results showed that the depth and the amount of moisture permeation are on the gradual increase from top to foot down the slop,i.e.,the moisture content at the foot of the sloping land is higher than that of the slop top,that individual nutrients showed different permeation performances and each accumulate in specific layer easily,that nitrate nitrogen permeated rapidly and in greater amount in comparison to quick-acting potassium and that the transfer of nitrate nitrogen is evidently affected by transportation of moisture,while the transfer of the rapid available potassium is less affected by that transportation. |
| Keywords: | sloping land water percolation nutrients percolation simulating research |
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