设施番茄发育期与叶龄动态模拟模型研究

Research on the Simulation Models of Phenophase and Leaf Number of Controlled Tomato

根据"发育生理日数恒定"原理构建设施番茄发育期与叶龄的动态模拟模型,利用2009年和2010年南京两个试验点的设施番茄品种(系)与播期、茬口试验及气象资料获取模型参数并检验模型。结果显示:所建发育期模型模拟的各发育阶段(出苗-定植、定植-现蕾、现蕾-坐果、坐果-成熟)模拟值与观测值之间的根均方差(RMSE)和平均绝对误差(ADe)分别为2.65d和3d、1.51d和1d、1.18d和1d、1.21d和1d;模拟全发育期时,RMSE值和ADe值分别为3.74d和3d,明显优于有效积温模拟模型的预测精度;利用叶龄动态模型模拟叶龄数时,RMSE值和ADe值都小于0.5片叶。说明本文所建模型可用于预测番茄的发育期和叶龄,并且具有较好适用性和可靠性,可为设施番茄生长模型的研究应用及数字化管理提供依据。

Phenophase number leaf number models of controlled tomato were built in accordance with the principle,＂physical development days are constant＂.Using the experiments data on variety（lines） and sowing date,and variety and season from different sites in Nanjing in 2009 and 2010,the models parameters were obtained,and the models were validated.The results indicated that when the phenophase model in this study was used to simulate a certain development period,the RMSE and the ADe between simulated and observed values were 2.65d and 3d from emergence to transplanting,1.51d and 1d from transplanting to flower bud,1.18d and 1d from flower bud to fruit setting,1.21d and 1d from fruit setting to fruit ripening period,respectively.The prediction accuracy of this phenophase model was higher than that of which model based on efficiency accumulate temperature.When the leaf number model was used to simulate the leaf number,RMSE and ADe between observation and simulation values were less than or equal to 0.5 leaves.It showed that the models developed in this paper could be used to predict the growth stage and leaf number of controlled tomato,and had better mechanism,general adaptability,and reliability.It could be used in digital management of controlled tomato.