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.
出处
《灌溉排水学报》
CSCD
北大核心
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)
关键词
模拟降雨
紫色土
坡耕地
入渗率
聚丙烯酰胺
simulated rainfall
purple soil
slope cropland
infiltration rate
polyacrylamide
