人工模拟暴雨条件下紫色土坡耕地入渗过程研究  

Infiltration Process of Purple Soil Slope Cropland under the Condition of Artificial Simulated Rainstorm

作　　者：龙天渝[1] 卢齐齐[1] 王玉霞[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《灌溉排水学报》2011年第2期76-78,81,共4页Journal of Irrigation and Drainage

基　　金：中国科学院西部行动计划(KZCX2-XB2-07)

摘　　要：结合室内物理化学试验等研究手段,运用人工模拟降雨法,分别探讨了不同暴雨强度,地面坡度及聚丙烯酰胺（PAM）加入量对紫色土坡耕地降雨入渗率的影响。研究结果表明,随着降雨强度的增大,稳定入渗率有增大的趋势;在0°~10°范围内随着坡度的增大紫色土坡面入渗量随之增加;PAM的加入可以较大程度促进土壤水分的入渗,提高稳定入渗率,但并不是加入量越多越好,试验条件下在加入量为5 g/m2时入渗率最大。According to the research methods such as indoor physical and chemical tests,the article studied the impact of the different rainfall intensity,slope and the quantity of polyacrylamide（PAM） on the purple soil infiltration using artificial rainfall method.The study results showed that： As the enlarge of rainfall intensity,steady infiltration rate had a trend of increase;In the range of 0 ° to 10 °,purple soil surface infiltration increased with the increase of slope.The addition of PAM could promote soil water infiltration with a great degree,it could also improve the steady infiltration rate,but it was not good with the increasing quantity,the infiltration rate was the highest for the 5 g/m2 in this test.

关 键 词：模拟降雨 紫色土 坡耕地 入渗率 聚丙烯酰胺 

分 类 号：S157[农业科学—土壤学]