Avalia o e desempenho de equa es de estimativa do armazenamento de 芍gua no solo em um balan o h赤drico climatol車gico decendial irrigacionista = Evaluation and performance of soil water storage equations in a decadal climatic water balance for irrigation

作者：Jorge Luiz Moretti de Souza; Siguifrid Gomes

来源：Acta Scientiarum - Agronomy, 2007.

• balan o hidrico
• irriga o
• armazenamento
• modelagem
• simula o
• water balance
• irrigation
• storage
• mathematical model
• simulation

O objetivo do presente trabalho 谷 comparar a dinamica do armazenamento de 芍gua em duas classes de textura do solo (arenoso e argiloso), na regi o de Ponta Grossa, Estado do Paran芍, utilizando um programa que permite a simula o do balan o h赤drico climatol車gico decendial para fins de irriga o agr赤cola com cinco equa es de estimativa do armazenamento de 芍gua no solo. Os melhores resultados foram obtidos para os valores de armazenamento simulados para o solo argiloso (CAD = 65 mm) com as equa es Potenciais de Primeira e Segunda Ordem e Co-senoidal. As equa es de Braga (1982) e deThornthwaite e Mather (1955) n o apresentaram bons resultados, considerando irriga es ao longo do ano. Os cinco modelos n o apresentaram diferen as significativas para balan os h赤dricos simulados sem irriga o. A simula o dos balan os h赤dricos para o solo arenoso (CAD = 25 mm) resultou em valores inconsistentes. The objective of this work was to compare the dynamic of soil water storage in two soil texture classes (sandy and clayey), inPonta Grossa, state of Paran芍 , Brazil, using a program that allows the simulation of decadal climatic water balance for agricultural irrigation with five equations to estimate the soil water storage. The best results were obtained for the soil water storage values simulated for the clayey soil (AWC = 65 mm) with First and Second Order Potential and Co-senoidal equations. The equations of Braga (1982) and Thornthwaite and Mather (1955) did not present good results considering irrigations along the year. The five models did not present significant differences for water balance simulated without irrigation. The water balance simulation for sandy soil (AWC = 25 mm) resulted in inconsistent values.