SIMULATION OF SOIL-NITROGEN DYNAMICS USING THE SOILN MODEL

被引：74

作者：

BERGSTROM, L

JOHNSSON, H

TORSTENSSON, G

机构：

[1] Division of Water Management, Swedish University of Agricultural Sciences, Uppsala, S-750 07

来源：

FERTILIZER RESEARCH | 1991年 / 27卷 / 2-3期

关键词：

MINERALIZATION; NITROGEN MODEL; PLANT N-UPTAKE; WINTER WHEAT;

D O I：

10.1007/BF01051126

中图分类号：

S15 [土壤学];

学科分类号：

0903 ; 090301 ;

摘要：

A model dealing with transport and transformations of nitrogen in soil is briefly described. The model has a one-dimensional layered structure and considers processes such as plant uptake, mineralization/immobilization, leaching and denitrification. A soil water and heat model provides daily values for abiotic conditions, which are used as driving variables in the nitrogen simulation. In this study, the model was run with data from a polder-soil area in the Netherlands, with winter wheat as the crop. The simulation results showed that if a measured time course of crop nitrogen uptake throughout the growing season is available, mineral-N dynamics in soil can be satisfactorily described with this model. The main problems identified in the simulations were related to the partitioning between above- and below-ground plant-N, and supplying the crop with sufficient N, as given by the measurements.

引用

页码：181 / 188

页数：8

共 9 条

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