Validation and Calibration of Land Production Simulation Model(PS123)

Abstract

Abstract: The experimental results on the growth and development of summer maize with different treatments of sowing dates, water supply in 1999 were used to improve and calibrate a quantitative land production simulation model (PS123)at both potential and water-limited levels based on the principle of other crop growth simulation model. Crop parameter values for common maize cultivar in the North China Plain were derived from the experiment data and default soil parameters were set for 4 local agricultural soils. The experimental data with water-limited treatments was used to validate the calibrated PS12 model. It is concluded that PS123 model had the basic capability for the application of regional land productivity evaluation and the possible improvements for the application of PS123 model were discussed at different scales.

Key words: Evaluation, Evaluation, Land productivity, Crop simulation model, Validation

LIU Hong~(1),GUO Wen-li~(2),YU Zhen-rong~(3) (1.Institute of Resource and Environment science, Jiangsu Academy of Agricultural Sciences, Nanjing 210014,China; 2.Institution of Climatic, Beijing Meteorological Bureau;3.College of Resource and Environment science, China Agricultural University). Validation and Calibration of Land Production Simulation Model(PS123)[J]. Chinese Journal of Agrometeorology.

References

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