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| 低山丘陵区红壤水分的动态变化及影响因素 | |
| 引用本文： | 方 堃,陈效民,杜臻杰,张佳宝,邓建强.低山丘陵区红壤水分的动态变化及影响因素[J].农业工程学报,2010,26(1):67-72. |
| 作者姓名： | 方 堃 陈效民 杜臻杰 张佳宝 邓建强 |
| 作者单位： | 1. 南京农业大学资源与环境科学学院,南京,210095;中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,南京,210008;农业部环境保护科研监测所,天津,300191 2. 南京农业大学资源与环境科学学院,南京,210095;中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,南京,210008 3. 南京农业大学资源与环境科学学院,南京,210095 4. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室,南京,210008 |
| 基金项目： | 国家重点基础研究发展计划（973计划）（2005CB121103）；中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室开放课题（0751010015） |
| 摘 要： | 红壤分布区域是中国重要的粮食产地，但是降水时空分布的不均匀导致了季节性干旱的发生。因此，了解红壤中水分时空分布规律具有十分重要的意义。该文研究了低山丘陵区红壤旱地不同肥料配比长期试验小区土壤含水率的季节性变化状况及其与气象因素的关系，分析了典型红壤地区的土壤水分变化规律。结果表明：研究区1 a内的土壤含水率变化分为4个阶段：土壤水分充盈期、土壤水分亏缺期、土壤水分补充恢复期和土壤水分平稳期。空白小区土壤含水率变化较大；在施用肥料的试验小区中，蒸发对氮肥小区、氮磷小区和氮磷钾小区的影响逐渐降低；而降雨对氮肥小区、氮磷小区和氮磷钾小区的影响力逐渐增加。通过掌握典型红壤地区的土壤水分变化规律，对该地区水资源的调配管理、灌溉安排及干旱评估均可起到重要的指导作用。 |
| 关 键 词： | 土壤，土壤含水率，动态响应，红壤，低山丘陵区 |
| 收稿时间： | 8/5/2008 12:00:00 AM |
| 修稿时间： | 2008/11/26 0:00:00 |
Dynamic variation and impact factors of red soil moisture in low mountain-hilly region |
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| Fang Kun,Chen Xiaomin,Du Zhenjie,Zhang Jiabao,Deng Jianqiang.Dynamic variation and impact factors of red soil moisture in low mountain-hilly region[J].Transactions of the Chinese Society of Agricultural Engineering,2010,26(1):67-72. | |
| Authors: | Fang Kun Chen Xiaomin Du Zhenjie Zhang Jiabao Deng Jianqiang |
| Institution: | 1.College of Resources and Environmental Sciences/a>;Nanjing Agricultural University/a>;Nanjing 210095/a>;China/a>;2.State Key Laboratory of Soil and Sustainable Agriculture/a>;Institute of Soil Science/a>;Chinese Academy of Sciences/a>;Nanjing 210008/a>;3.Agro-Environmental Protection Institute/a>;Ministry of Agriculture/a>;Tianjin 300191/a>;China |
| Abstract: | The red soil, distributed in many provinces in China, has great potential for agricultural development. But seasonal drought and low available soil moisture restrict agricultural production in the red soil region. In the study, soil moisture and physic-chemical properties of red soil were determined to analyze the soil moisture dynamic variation in different periods and to find out the profit and loss of soil moisture and their impact factors. The results showed that the variation of red soil moisture in one year could be divided into four phases: filling phase (from March to June), deficit phase (from June to August), recovery phase (from August to October), and stable phase (from October to March). In different experimental plots, meteorological factors had different influences. Effects of evaporation on N plot, NP plot, and NPK plot showed the digressive trend. On contrast, effects of rainfall showed the ascending trend. The plot with no fertilizer, which had no plant growth, could be influenced directly by evaporation or rainfall. It can play a very important role in water resources management, irrigation arrangement and drought evaluation by mastering the trend of the soil moisture dynamic variation in the red soil region. |
| Keywords: | soils soil moisture dynamic response red soil low mountain-hilly region |
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