摘要
以ＧＯＳＳＹＭ 模型为例系统阐述了作物生长模拟模型有关参数校正和模型有效化的一般原理和方法，同时用新疆棉区的试验具体校正了品种参数、土壤参数和修改了部分模块，并对校正结果进行了验证．结果表明，两个试点土壤２０ ～４０ 、６０ ～８０ｃｍ 两个土层生长季水分动态观测值与土壤参数校正后模型的模拟值吻合较好；系５ 品种试验生育期６ 项生物指标动态模拟结果与实测值拟合的相关系数都在０ ．９ 以上，并且不同栽培条件的３ 个处理的模拟产量的相对误差平均为７ ．５ ％ ，模拟结果较理想．
Taking GOSSYM model as an example,the theory and methodology for calibration andvalidation of crop growth simulation model were expounded in this paper.The variety and soil parameters of the model used in cotton planting area of Xinjiang were calibrated,some modules of the model were modified, and the result of calibration was also validated. The results show that at two experimental sites, the observational values of soil moisture in 20～40 and 60～80 cm layers in growing season were better identical to those simulated by the model with calibrated soil parameter. The coefficients of simulated and experimental values of six biological indexes of Xi 5 (an early maturity cotton variety) in its growth and development period were all above 0.9,and the relative errors of the simulating yields of three treatments under different cultivation conditions were averaged by 7.5%.
出处
《应用生态学报》
CAS
CSCD
1999年第6期679-682,共4页
Chinese Journal of Applied Ecology
基金
国家"九五"重点科技攻关项目
