间隔覆盖法对塿土坡面土壤水分入渗研究  

Soil Moisture Infiltration for Varying Mulch Coverage on a Sloped Lou Soil

作　　者：崔素芳[1] 吴泉源[1] 潘英华[2] 张振华[2] 牛洪燕 

机构地区：[1]山东师范大学人口资源环境学院,济南250014 [2]鲁东大学地理与规划学院,山东烟台264025 [3]山东青州市东高初级中学,山东青州262509

出　　处：《灌溉排水学报》2013年第5期87-90,共4页Journal of Irrigation and Drainage

基　　金：国家自然科学基金项目(40801100;50179035;50609022);黄土高原土壤侵蚀与旱地农业国家重点实验室基金项目(10501-177;10501-220)

摘　　要：采用间隔覆盖技术,通过室内人工模拟降雨的正交试验,对塿土坡面产流动态变化过程进行模拟分析。结果表明,同一时刻累积入渗量、入渗率随降雨强度的增大而增大;当覆盖面积比和降雨强度一定时,存在一个临界坡度,为26.8%;其他条件一定时,覆盖面积越大,累积入渗量、入渗率随覆盖面积比的增大而增大。采用产流积水法模拟降雨入渗率的误差在0.000 2～0.012 9,拟合效果较好。Alternative coverage strategies were investigated based on orthogonal experiments using indoor artificial rainfall. Rainfall infiltration runoff process for Lou soil surface was analyzed. The results showed that： the amount of cumulative infiltration and infiltration rate increased with the increase of the rainfall intensity at the same infiltration time~ at the same rainfall intensity and coverage ratio, there existed a crit- ical gradient slope of about 26.8%. Under certain conditions, the cumulative infiltration and infiltration rate increased with the increase of the coverage area. Rainfall infiltration rate was simulated by the method of runoff ponding under different conditions, and the errors changed from 0. 000 2 to 0. 012 9 with a higher degree of fitting.

关 键 词：间隔覆盖法 累积入渗量 入渗率 模拟降雨 

分 类 号：S152.7[农业科学—土壤学]