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2011—2013年采用“3414”完全试验设计方案,对巴西蕉叶面积指数LAI及当地积温间的关系进行了分析,拟合出几种香蕉叶面积指数动态变化模型,其中以叶面积指数与归一化的相对积温间的动态模型较好,即:LAIi=3.653 2/[1+e-(RDDi-0.502 9/0.089 2)]。用2011—2013年独立资料进行检验,叶面积指数模拟值与实测值的平均绝对误差Χde为0.044 7,差值标准误Sde为0.211 5,相关系数R为0.927,达显著水平。表明所建模型可以较好地模拟巴西蕉叶面积指数的动态变化,也可用于巴西蕉生长、产量模拟以及对巴西蕉的生长监测和遥感估产。
In 2011-2013, the “3414” complete experimental design was used to analyze the relationship between leaf area index (LAI) of Brazilian banana and local accumulated temperature. Several dynamic models of leaf area index of banana were fitted. Leaf area index Compared with the normalized relative accumulated temperature, the dynamic model is better: LAIi = 3.653 2 / [1 + e- (RDDi-0.502 9 / 0.089 2)]. According to the independent data from 2011 to 2013, the mean absolute error of simulated leaf area index and measured value was 0.044 7, the standard deviation of error Sde was 0.211 5, and the correlation coefficient R was 0.927, reaching a significant level. The results show that the model can simulate the dynamic change of leaf area index of Brazilian banana, and can also be used for the growth of Brazilian banana, the yield simulation and the growth monitoring and remote sensing estimation of Brazilian banana.