陕北坡地土壤水分动态试验与模拟研究
The Soil Water Movement Experiment and Simulation in Northern Shaanxi Province
摘要: 为分析坡地土壤水分运移规律,以陕北黄土高原米脂县孟岔村红枣基地典型坡地为研究对象,应用Hydrus-1D模拟了坡地土壤水分运移过程。结果表明,秸秆覆盖的坡面保水保墒效果明显,且覆盖秸秆和施保水剂对坡面降雨的调蓄有一定作用。降雨后不同深度土壤水分变化的幅度有明显差异,浅层水分变化的幅度大于深层。利用软件模拟分析方法能够较合理地模拟土壤水分一维动态变化过程,可以作为一种预测手段,对土壤水分动态变化问题的研究有一定的参考价值。
Abstract:
The soil water movement in typical slope of the Mengcha Village, which is located in Mizhi Town, Northern Shaanxi Province, was analyzed by the Hydrus-1D model. The results showed that the straw mulching slope had obvious water-holding effect, and it could control the rain storage as well as the water-holding applying slope. The change rates in different depth of soil moisture were significantly different, shallow soil moisture variation is larger than the deeper. Hydrus-1D can simulate soil water movement effectively in the vertical direction as a prediction way.
参考文献
[1]
|
雷志栋, 胡和平. 关于提高灌溉水利用率的认识[J]. 中国水利, 1999, 7: 13-14.
LEI Zhidong, HU Heping. Improving the understanding of the utilization of irrigation water. China Water Resources News, 1999, 7: 13-14. (in Chinese)
|
[2]
|
张炜, 杨茂盛. 陕北地区坡耕地特色种植农业的优化研究[J]. 安徽农业科学, 2011, 39(23): 14303-14304.
ZHANG Wei, YANG Maosheng. Study on the optimization of characteristic agriculture in slope farmland of Shanbei region. Journal of Anhui Agricultural Science, 2011, 39(23): 14303- 14304. (in Chinese)
|
[3]
|
尚爱军, 栾爱梅, 张雄, 等. 陕北荒漠化地区农业持续发展技术体系研究[J]. 干旱地区农业研究, 2002, 20(3): 121-123.
SHANG Aijun, LUAN Aimei, ZHANG Xiong, et al. Study on Technology system for agriculture sustainable development in north Shaanxi desertification region. Agricultural Research in the Arid Areas, 2002, 20(3): 121-123. (in Chinese)
|
[4]
|
SIMUNEK, J., SEJNA, M., SAITO, H., SAKAI, M. and VAN GENUCHTEN, M. T. The HYDRUS-1D software package for simulating the movement of water, heat, and multiple solutes in variably saturated media, version 4.08, HYDRUS Software Series 3. Department of Environmental Sciences, University of Cali- fornia Riverside, Riverside, 2008: 330.
|
[5]
|
SIMUNEK, J., SEJNA, M. and Van GENUCHTEN, M. T. The Hydrus-1D software package for simulating the one 2-dimen- sional movement of water, heat, and multiple solutes in variably saturated media. US Salinity Laboratory, 1998.
|
[6]
|
马欢, 杨大文, 雷慧闽, 等. Hydrus-1D模型在田间水循环规律分析中的应用及改进[J]. 农业工程学报, 2011, 27(3): 6-12.
MA Huan, YANG Dawen, LEI Huimin, et al. Application and improvement of hydrus-1D model for analyzing water cycle in an agricultural field. Transactions of the Chinese Society of Ag- ricultural Engineering, 2011, 27(3): 6-12. (in Chinese)
|