Application of the STICS crop model to predict nitrogen availability and nitrate transport in a tropical acid soil cropped with maize

被引:0
作者
J. Sierra
N. Brisson
D. Ripoche
C. Noël
机构
[1] Unité Agropédoclimatique de la Zone Caraïbe,
[2] INRA Antilles-Guyane,undefined
[3] Domaine Duclos (Prise d'Eau),undefined
[4] Unité Climat,undefined
[5] Sol et Environnement,undefined
[6] INRA Avignon,undefined
[7] Domaine St. Paul (Site Agroparc),undefined
来源
Plant and Soil | 2003年 / 256卷
关键词
aluminium toxicity; leaching; nitrate retention; nitrification; oxisol; plant uptake;
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摘要
Oxisols have a high likelihood of NO3− leaching which may strongly reduce N availability for tropical crops. The aim of this work was to evaluate the N and the water submodels of the STICS crop model for its ability to estimate N availability in N-fertilised field maize crops on two oxisols in Guadeloupe (French West Indies) with and without Al toxicity: a non-limed plot (NLI, pHKCl 3.9, 2.1 cmol Al3+ kg−1), and a limed plot (LI, pHKCl 4.5, 0 cmol Al3+ kg−1). An uncropped plot (UC, pHKCl 4.5, 0 cmol Al3+ kg−1) was used in order to fit some model parameters for soil evaporation, nitrification and NO3− transport. The model was modified in order to describe nitrification as a partially inhibited process in acid soils, and to take into account NO3− retention in oxisols. Nitrification was described as the result of the multiplicative effects of soil acidity, temperature and soil water content. Soil moisture and NO3− and NH4+ content up to 0.8 m soil depth, above-ground biomass and N uptake by crops, and their leaf area index (LAI), were measured from sowing to the beginning of grain filling. The model described correctly the changes in soil water content during the moist and the dry periods of the experiment, and there was some evidence that capillary rise occurred in the dry period. Nitrogen mineralization, nitrification in UC, NO3− transport and plant uptake were satisfactorily simulated by the model. Because of the effect of Al toxicity on plant growth, LAI at flowering was three times higher in LI than in NLI. Some discrepancies between observed and simulated data were found for the distribution of NO3− and NH4+ in the cropped plots. This was probably due to the change of the ionic N form absorbed by the crops as a function of soil acidity and available P in the soil. No leaching was observed below 0.8 m depth and this was associated with NO3− retention in the soil. The results showed that partial inhibition of nitrification and NO3− retention should be taken into account by crop models to obtain realistic estimates of N availability for plants in tropical acid soils.
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页码:333 / 345
页数:12
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  • [1] Alves V. M. C.(1998)Localização de fósforo e de nitrogênio afetando os parâmetros cinéticos de absorção de nitrogenênio em milho Rev. Bras. Fisiol. Veg. 10 197-201
  • [2] de Magalhães J. V.(1973)Field study of solute movement in a highly aggregated Oxisol with intermittent flooding: I. Nitrate J. Environ. Qual. 2 359-362
  • [3] de Novais R. F.(1979)Effect of nitrate leaching in Oxisol columns on Commun. Soil Sci. Plant Anal. 10 521-529
  • [4] Bahia Filho A. F.(1993)N abundance and nitrate breakthrough curves Agron. J. 85 153-159
  • [5] de Oliveira C. A.(1991)Evaluation of the nitrogen submodel of CERES-Maize following legume green manure incorporation Water Resour. Res. 27 719-727
  • [6] França C. C. M.(2003)A semi-empirical model of bare soil evaporation for crop simulation models Eur. J. Agron. 18 309-332
  • [7] Balasubramanian V(1993)An overview of the crop model STICS Agron. J. 85 334-340
  • [8] Kanchiro Y(1999)Cation and nitrate leaching in an Oxisol of the Brazilian Amazon Plant Soil 208 95-102
  • [9] Rao P. S. C.(2000)Effect of ammonium or nitrate nutrition on net photosynthesis, growth, and activity of the enzymes nitrate reductase and glutamine synthetase in blueberry, raspberry and strawberry J. Plant Nutr. 23 263-273
  • [10] Green R. E.(2000)Influence of phosphorus stress on ammonium uptake by maize Geoderma 98 11-33