Ứng dụng mô hình CERES-Maize mô phỏng năng suất bắp lai trồng trên đất phù sa ở Đồng bằng sông Cửu Long

Abstract

The objectives of this study were to calibrate and validate the CERES-Maize model and simulate the response of maize growth and yield to different doses of nitrogen and organic fertilizers in alluvial soil. Field experiments were carried out from August 2015 to April 2016 at the Soil Science Department, Can Tho University to collect data for model calibration and validation. The calibrated and validated results showed that there were good agreements between simulated and observed data, indicating through the statistical parameters, i.e. yield (EF:0.85 – 0.99; RMSE:181.49 – 669.71 kg/ha; nRMSE: 3.87 – 12.13 %); above-ground biomass (EF:0.97 – 0.98; RMSE:672.91 – 942.80 kg/ha;, nRMSE: 8.01 – 10.39 %); leaf number (EF: 0.90 – 0.95; nRMSE: 7.81 – 12.04 %. Meanwhile, the simulated leaf area index was rather good agreement to the observed data, i.e. EF:0.69 – 0.82 và nRMSE: 15.65 – 20.47%. Maximum temperature and rainfall were the parameters having the highest sensitivity among the others.