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利用河南省温县多年玉米栽培数据资料对玉米生长模型MCSODS的系统参数进行调试,使品种模拟参数符合当地情况。采用秋常、秋凉、秋暖不同年型下典型年份的玉米栽培资料检验玉米生长模型对气候变化的适应性。结果显示,不同年型下生育期的模拟误差根均方差(RMSE)在秋常条件下为2.06,吻合度最高;秋凉、秋暖年RMSE分别为2.32和3.45。产量模拟误差RMSE为494.8 kg/hm2,模拟效果一致性较好。2006、2007年玉米田间实测数据对系统叶面积指数和地上生物量模拟的检验结果显示,郑单958和浚单20叶面积指数的RMSE分别为0.441 0和0.402 2,地上干物重RMSE分别为1 683.0 kg/hm2和898.5 kg/hm2,模拟结果良好。
The system parameters of corn growth model MCSODS were debugged by using the corn planting data of many years in Wenxian County, Henan Province to make the simulation parameters of the varieties meet the local conditions. The adaptability of maize growth model to climatic change was tested by maize cultivation data under typical years of autumn, autumn, cool and autumn. The results showed that the root mean square error of variance (RMSE) of simulation error during the growth period under different years was 2.06 under the autumn normal conditions, and the highest coincidence degree was obtained. The RMSE of autumn, cool and autumn were 2.32 and 3.45 respectively. The simulation error of yield was 494.8 kg / hm2, and the simulation effect was better. The field measurements of maize in 2006 and 2007 showed that the RMSEs of leaf area index of Zhengdan 958 and Xundan 20 were 0.441 0 and 0.402 2, respectively, and RMSE of above-ground dry matter weight was 1 683.0 kg / hm2 and 898.5 kg / hm2, the simulation results are good.