摘要
在室内试验的基础上，对施于水层中的氮肥（碳铵：ＮＨ４ＨＣＯ３）在饱和土中的转化与运移过程进行了数值模拟．测定了ＮＨ－Ｎ在饱和土中转化和运移的有关参数．结果表明，土壤溶液中ＮＨ－Ｎ的计算值与实测值的吻合程度是满意的．
On the basis of laboratory experiments, the mathematical model of the transformation and transportation of NH-N in saturated soil is established and solved by the characteristic finite element method. The parameters, coefficient of dispersivity (α), retardation coefficient (Rd) and nitrification coefficient (K) of the mathematical model have been measured. The calculated results well agree with the observed data. The effets of trasformation and transportation of NH-N in saturated soil are also discussed.
出处
《水利学报》
EI
CSCD
北大核心
1995年第6期16-22,共7页
Journal of Hydraulic Engineering
基金
国家自然科学基金
水利水电基金
关键词
饱和土壤
室内试验
数值模拟
氮肥转化
排水
saturated soil
N-fertilizer
solute transport
nitrifiction
numerical modeling.
