排灌机械工程学报2012，Vol.30Issue(2)：231-236,6.DOI:10.3969/j.issn.1674-8530.2012.02.021
二维撒施畦灌地表水流溶质运移模型:Ⅱ验证
Broadcasted fertilizer solute transport model in 2D surface water flow of border irrigation: Ⅱ.Validation
摘要
Abstract
The two-dimensional surface water flow and solute transport model of border irrigation with broadcasted fertilizer was validated by using the experimental data according to the views of the traditional average relative error and the Markov stochastic process. From the view of the conventional average relative error, the average errors in water advance and recession phases are 4. 98% and 9. 37% , and the water balance error is 0. 28% , the average errors in solute concentration at every observed point are 8.64% - 14. 22% , and the solute balance error is 0. 58%. Thus the proposed model can successfully simulate the water and solute transport processes in border irrigation with broadcasted fertilizer. From the view of Markov stochastic process, the micro-topography stochastic effect on the simulated results is 88.68% -96. 21% , and the soil surface stochastic effect which isn't involved in the model is 3.97% - 11.32% , so that even the model just includes the micro-topography randomness, it has a good simulation performance. Consequently the proposed model provides a practical and perfect numerical tool for evaluating the performance of border irrigation with broadcasted fertilizer.关键词
畦灌试验/撒施/溶质质量浓度/平均相对误差/马尔科夫随机过程Key words
border irrigation/broadcasted fertilizer/solute concentration/average relative error/ Markov stochastic process分类
农业科技引用本文复制引用
章少辉,许迪,李益农,白美健..二维撒施畦灌地表水流溶质运移模型:Ⅱ验证[J].排灌机械工程学报,2012,30(2):231-236,6.基金项目
国家863计划项目(2011AA100505) （2011AA100505）
"十二五"国家科技支撑计划项目(2011BAD25B04) （2011BAD25B04）
