论文部分内容阅读
利用重庆市4个代表性站点的小麦田间观测数据和同期逐日气象数据对APSIM模型在重庆小麦产区的适应性进行研究,确定了12个小麦品种的作物参数.结果表明:模拟小麦的播种至出苗、开花和成熟各阶段天数与实测值具有较好的一致性,其均方根误差值分别为0~3、1~8和0~8 d;模拟的12个小麦品种中,模拟与实测地上部分生物量的归一化均方根误差(NRMSE)均低于30%,10个品种模拟与实测产量的NRMSE均低于30%,作物生育期、地上部分生物量和产量的模拟结果均在可接受范围内波动.说明APSIM模型对不同品种冬小麦的生育期、地上部分生物量和产量模拟效果较好,该模型在重庆地区具有较好的适应性,为后续基于模型评估该地区小麦生产提供了基础支撑.
Using the wheat field data and the meteorological data of the same period in the four representative sites of Chongqing City, the adaptability of APSIM model in Chongqing wheat producing area was studied, and the crop parameters of 12 wheat cultivars were determined.The results showed that: The numbers of days of emergence, flowering and maturity were in good agreement with the measured values, and the root mean square error values were 0 ~ 3, 1 ~ 8 and 0 ~ 8 d respectively. Among the 12 simulated wheat cultivars, the simulated and measured The normalized root mean square error (NRMSE) of above-ground biomass was less than 30%. The NRMSE of 10 simulated and measured yield was lower than 30%. The simulation results of crop growth period, aboveground biomass and yield Fluctuating within the acceptable range, indicating that the APSIM model has better simulation effects on the growth, shoot biomass and yield of different varieties of winter wheat. The model has good adaptability in Chongqing, Provided the basic support.