温室黄瓜磷素吸收与分配动态模拟

Simulation of Phosphorus Uptake and Partitioning in Greenhouse Cucumber

摘要:

依据温室黄瓜磷素吸收、分配与温度、辐射的关系，构建了基于辐热积的温室黄瓜磷素吸收与分配模型，并利用与之相独立的试验资料对模型进行了检验。结果表明：模型对温室黄瓜磷素总吸收量的预测结果与1∶1直线之间的决定系数为0.91，均方根差为0.04g/株；根、茎、叶、果实磷素质量分数决定系数分别为0.74、0.65、0.72、0.65，均为根差分别为0.03%、0.04%、0.02%、0.06%。模型对不同季节温室黄瓜磷素吸收量与各器官磷素含量的预测值与实测值较为一致。

Abstract:

Based on relationship between phosphors uptake, partitioning, radiation and temperature, a simulation model of greenhouse cucumber phosphorus uptake and partitioning was established. Different experiment data was used to validate the model. The results showed that the coefficients of determination between predicted and measured value based on the 1∶1 line were 0.91,0.74,0.65,0.72,0.65, respectively, and the root mean squared error between the predicted and the measured value was 0.04g/plant, 0.03%, 0.04%, 0.02%, 0.06%, respectively, for phosphorus uptake, root, stem, leaf and fruit phosphorus content. The model could give satisfactory prediction of phosphorus uptake and root, stem, leaf and fruit phosphorus content of greenhouse cucumber in different seasons.