Preliminary Study on Seasonal Variation and Water Budget in Slope Farmland of Purple Soil

LUO Zhuan-xi; ZHU Bo; WANG Tao; KUANG Fu-hong; TANG Jia-liang; XU Tai-ping

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Preliminary Study on Seasonal Variation and Water Budget in Slope Farmland of Purple Soil

更新时间：2024-11-07

- Preliminary Study on Seasonal Variation and Water Budget in Slope Farmland of Purple Soil
- Vol. 21, Issue 2, Pages: 124-128(2007)
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  CLC： S152.7
- Published：2007
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LUO Zhuan-xi, ZHU Bo, WANG Tao, et al. Preliminary Study on Seasonal Variation and Water Budget in Slope Farmland of Purple Soil[J]. 2007, 21(2): 124-128.
DOI：

LUO Zhuan-xi, ZHU Bo, WANG Tao, et al. Preliminary Study on Seasonal Variation and Water Budget in Slope Farmland of Purple Soil[J]. 2007, 21(2): 124-128. DOI：

摘要

通过具有壤中流测定功能的紫色土坡地径流小区的定位观测，结合物质平衡方法研究紫色土坡耕地水量的季节变异特征与平衡问题。结果发现，坡耕地玉米生长期水量的主要支出项为农田蒸散量、壤中流，分别为278．07，187．32mm，农田蒸散率与壤中流径流系数分别为50．51％，34．03％，而地表径流系数、农田蓄水率模拟值分别为7．59％，7．94％；坡耕地生长期支出总量为229．08mm，总径流系数为41．61％；坡耕地生长期径流支出具有季节变异特征，地表径流是玉米播种-拔节初期径流的唯一支出方式，其径流系数为9．32％，而壤中流则是拔节初期-收割近100天径流的主要支出方式，尤以灌浆成熟-收割前的近两月为甚；期间，壤中流径流系数最低为10．82％，最高至65，61％。

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Preliminary Study on Seasonal Variation and Water Budget in Slope Farmland of Purple Soil

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