| 地下滴灌施肥条件下土壤中氮行为模拟 |
| |
| 引用本文： | 宰松梅,仵峰,温季,孙浩.地下滴灌施肥条件下土壤中氮行为模拟[J].中国农村水利水电,2011(7). |
| |
| 作者姓名： | 宰松梅 仵峰 温季 孙浩 |
| |
| 作者单位： | 中国农业科学院农田灌溉研究所,河南新乡,453003 |
| |
| 基金项目： | 国家高技术研究发展计划(“863”计划)项目(2006AA100213); 农业科技成果转化资金项目(2009GB23320465) |
| |
| 摘 要： | 以土壤水分运动的动力学方程和溶质运移的对流-弥散方程为基础,结合灌溉施肥过程中的初始和边界条件,建立了地下滴灌施肥条件下土壤水肥运动模拟模型,以SWM-2源代码为蓝本,模拟了新疆棉花地下滴灌施肥后土壤中氮的分布与变化过程。结果表明,地下滴灌条件下,施肥时机直接影响到土壤中氮的分布,施肥后冲洗管道1 h,使氮的运动在剖面上呈双峰曲线,以毛管为中心,氨态氮的运动局限于20 cm以内,其含量随时间延长而减少,同时向下层土壤运动;与氨态氮相比,硝态氮的运动范围略有增加,在垂直方向上向上运动大于向下运动。
|
| 关 键 词： | 地下滴灌 施肥灌溉 氮 |
Simulation of Soil Nitrogen Behavior under Fertilizing with Subsurface Drip Irrigation |
| |
| ZAI Song-mei,WU Feng,WEN Ji,SUN Hao.Simulation of Soil Nitrogen Behavior under Fertilizing with Subsurface Drip Irrigation[J].China Rural Water and Hydropower,2011(7). |
| |
| Authors: | ZAI Song-mei WU Feng WEN Ji SUN Hao |
| |
| Institution: | ZAI Song-mei,WU Feng,WEN Ji,SUN Hao(Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Xinxiang 453003,Henan Province,China) |
| |
| Abstract: | The dynamic equations of soil water movement and convection,diffusion equation of solute transport are used as the govern equation,combing the initial and boundary conditions of irrigation and fertilization process.A model is established to simulate the movement of soil water and fertilizer under subsurface drip fertigation.It is solved by a revised SWM-2 source code.Using this model,the distribution and process of soil nitrogen in cotton field is simulated with 1 hour flush under subsurface drip fertigatio... |
| |
| Keywords: | subsurface drip irrigation fertigation nitrogen |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
