XIE Heng-xing,ZHANG Zhen-hua,FENG Xue.A Preliminary Study on Water Movement Key Parameters of Sand Tube Irrigation[J].Research of Soil and Water Conservation,2007,14(03):112-114.
沙管滴灌水分运移关键参数初探
- Title:
- A Preliminary Study on Water Movement Key Parameters of Sand Tube Irrigation
- Keywords:
- linear source sand tube irrigation; normal surface applied drip irrigation; horizontal/vertical wetting front; ratio of wetting front; law of water movement
- 分类号:
- S275.6
- 摘要:
- 在室内模拟了线源沙管滴灌，分析了沙管滴灌条件下水平、垂直湿润锋的运移规律，并比较了不同流量和滴灌(有无沙灌)条件下的水分运移特征.结果表明，沙管滴灌条件下水平和垂直湿润锋均随时间的增加而增大，且垂直湿润锋始终大于水平湿润锋;水平和垂直湿润锋均随流量的增加而增大;与普通地表滴灌相比，在相同流量条件下水平湿润锋要小，而垂直湿润锋要大.普通地表滴灌与沙管滴灌水平湿润的比值先上升，后下降;沙管滴灌与普通地表滴灌垂直湿润锋的比值先下降，后平稳.
- Abstract:
- With the analysis of the horizontal wetting front and the vertical wetting front movement law and the comparison of water movement characteristics between different discharge rate and different surfer condition(with and without sand tube) conducted,the linear sand tube irrigation was performed in the lab.Results showed that the horizontal wetting front and the vertical wetting front increased with the time pass by,and the horizontal wetting front excess the vertical wetting front all the time;the horizontal wetting front and the vertical wetting front increased with the ascending of the discharge rate,too.Compared with normal surface applied drip irrigation,the horizontal wetting front was short and the vertical wetting front was long under the same discharge rate.The ratio of the horizontal wetting front between normal surface applied irrigation and sand tube irrigation ascended first,and descended then;The ratio of the vertical wetting front between sand tube irrigation and normal surface applied irrigation descended first,and stabilized then.
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备注/Memo
收稿日期:2006-6-6
基金项目:鲁东大学大学生科技创新基金项目;烟台师范学院重点基金项目(043201)
作者简介:谢恒星(1981- )，男，山东兖州人，在读研究生，主要从事区域水土资源高效利用研究;