Study on the relative thermal effectiveness of facility sweet cherry fruit development period——take the effective accumulated temperature as an example
To investigate the influence of temperature on the development of facility sweet cherry fruit and provide theoretical basis for other temperature environmental models in facility sweet cherry production,this study monitored the growth cycle and effective heat accumulation of facility sweet cherry fruit at different development stages(the first rapid growth period,hard kernel stage,and the second rapid growth period)in Yantai area of Shandong Province through field monitoring.The simulated values based on the established growth models for other crops based on effective accumulated temperature were compared with the actual values,and the results showed that the differences between the development stages were all less than 3 days,verifying the accuracy of the model in predicting the development cycle of facility sweet cherry fruit.The simulated values obtained through the model were used to calculate the relative thermal effectiveness at each growth stage,and the root mean square error(RMSE)between the simulated values and actual values was 0.78 and 0.45 for each stage,respectively.Therefore,calculating the relative thermal effectiveness of facility sweet cherry fruit development period based on effective accumulated temperature has high accuracy,which can be used to predict the development cycle of facility sweet cherry fruit in Yantai area and provide reference for temperature regulation,growth prediction,and subsequent model establishment in facility sweet cherry production.
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