摘要
通过清水与不同肥液浓度的膜孔单向交汇室内入渗试验,研究了不同浓度的膜孔肥液单向交汇入渗量、湿润锋运移距离及土壤含水量分布。提出了土壤入渗量和湿润锋运移距离随肥液浓度的增加而增大的规律;建立了不同肥液浓度膜孔入渗量和湿润锋运移距离经验模型。经实测资料验证,模型精度较高;肥液浓度越大,相同时间的湿润锋运移距离越大,相同深度处的土壤含水量也越大。
Based on lab experiment under film hole single-line interference infiltration with different fertilizer solution concentration,cumulative infiltration volume,wetting front transport distance and the distribution of soil water content with different fertilizer solution concentration were studied.The laws of cumulative infiltration volume and transport distance of wetting front increased with the increase of solution concentration were presented,mathematical models for cumulative infiltration volume under film hole infiltration and wetting front transport distance were developed,the models were verified by measured data,wetting front transport distance in the same time and the soil water content at the same depth increased with the increase of solution concentration.
出处
《干旱地区农业研究》
CSCD
北大核心
2009年第6期83-88,共6页
Agricultural Research in the Arid Areas
基金
兰州交通大学"青蓝"人才工程基金(QL-08-20A)
国家自然科学基金项目(50579064)
陕西高校省级重点实验室重点科研项目(03JS041)
关键词
膜孔灌
单向交汇入渗
肥液浓度
水分运移特性
film hole irrigation
single-line interference infiltration
fertilizer solution concentration
water transport characteristics
