摘要
利用人工降雨模拟试验,研究了降雨场次、初始养分量和坡度对人工土壤N,P,Cl 3种营养元素径流损失特性的影响.结果表明:(1)径流水中N,P,Cl元素养分质量浓度与降雨场次之间呈对数关系、与初始养分量和坡度之间呈线性关系;(2)N,P,Cl元素养分流失量与降雨场次呈对数关系、与初始养分量和坡度之间呈线性关系;(3)降雨场次对氮元素的作用明显高于磷和氯元素,坡度对N,P,Cl元素的作用大小依次为:Cl,P,N.
In an artificial rainfall simulation experiment, the effects of rain date, initial nutrient content and slope in plot on the runoff loss characteristics of N, P and C1 were studied The results showed that the concentrations of N, P and C1 nutrients in the runoff water were in a logarithmic relationship with rainfall date and in a linear relationship with initial nutrient content and slope; that the loss quantity of N, P and C1 nutrients was in a logarithmic relationship with rainfall date and in a linear relationship with initial nu trient content and slope; and rainfall date had a significantly greater effect on N than on P and C1, and the effect of slope on the nutrients appeared in the sequence of C1, P and N,
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第3期132-138,共7页
Journal of Southwest University(Natural Science Edition)
基金
国家科技支撑计划课题(2011NAK12B04
012BAD11B03)
关键词
人工土壤
氮
磷
氯
径流损失
降雨场次
坡度
artificial soil
nitrogen
phosphorus
chlorine
runoff loss
rainfall date
slope
