论文部分内容阅读
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.
The effects of rainfall duration, initial nutrient content and slope on the runoff loss characteristics of N, P and Cl nutrient nutrients in artificial soil were studied by artificial rainfall simulations. The results showed that: (1) N, P and Cl nutrient nutrients in runoff water There was a logarithmic relationship between the concentration and the number of rainfall events and a linear relationship between the initial nutrient content and the slope. (2) The nutrient losses of N, P and Cl elements were logarithmically correlated with the rainfall events, (3) The effect of rainfall on nitrogen was significantly higher than phosphorus and chlorine, and the effect of slope on N, P and Cl was Cl, P, N in turn.