基于温度和太阳辐射的番茄果型果径模拟模型

Simulation Model of Tomato Fruit Diameter and Fruit Shape Index Based on Temperature and Solar Radiation

根据塑料大棚内番茄果实生长与温度和太阳辐射的关系,建立了以环境影响因子积为尺度的设施番茄果实果径及果型指数模拟模型,并用独立的试验数据进行了检验。验证结果表明,设施番茄第一到第五序果果径的模拟值与实测值之间的回归估计标准误差(RMSE)分别为1.14、0.68、1.06、1.30和0.78 cm;果型指数的模拟值与实测值之间的回归估计标准误差(RMSE)分别为0.053、0.035、0.035、0.094和0.142。模型对设施番茄各序果果实的果径和果型指数的模拟值与实测值的符合度较好,实用性较强,可以为设施番茄生产提供理论依据和决策支持。

In this study,two models of fruit diameter and fruit shape index in greenhouse tomato were developed based on the effects of temperature and solar radiation on fruit growth using total effective accumulated temperature and PAR（TEP） as prediction index.Other planting data was collected in greenhouse to validate the model.The results showed that,the root mean squared error（RMSE） between the simulated and measured values of fruit diameter on the 1st to 5th sequence fruit was 1.14 cm,0.68 cm,1.06 cm,1.30 cm and 0.78 cm,respectively;RMSE between the simulated and measured values of fruit shape index on the 1st to 5th sequence fruit was 0.053,0.035,0.035,0.094 and 0.142,respectively.The simulated values of tomato fruit diameter and fruit shape index agreed well with the measured ones.The models developed in this study are applicable and can provide theoretical basis and decision support for the production of greenhouse tomato.