关键词: 胶东地区, 日光温室, 温度, 相对湿度, 模型预测

Abstract: In order to investigate the changes in the internal environment of the solar greenhouse in Jiaodong area and its suitability for tomato cultivation, and to predict the internal air temperature and relative humidity, different sensors were applied to monitor and analyze the air temperature and relative humidity inside and outside the greenhouse from June 01, 2019 to May 31, 2020. At the same time, predictive models of air temperature and relative humidity in different seasons and different weather conditions inside the solar greenhouse were established, and the root mean square error (RMSE) was used to analyze the models. The results indicated that: the average air temperature inside the solar greenhouse was highest in July and lowest in January, at 29.7 and 14.1 ℃, respectively. Compared with the outside, the number of dates in  spring and autumn inside the greenhouse increased by 78 d, and decreased by 118 d in the winter. The periods that were not conducive to tomato growth were concentrated in summer and winter. High temperature with low humidity, low temperature with high humidity were prone to occur inside the greenhouse in summer and winter. The average RMSE value of the predicted value and actual value of the air temperature and relative humidity predictive models inside the greenhouse were 4.1 ℃ and 10.1%, respectively. The simulated effect of the models was generally good.

Key words: Jiaodong area, solar greenhouse, temperature, relative humidity, model prediction