典型天气下三种结构温室气温特征及预报模型研究

Research on the Temperature Characteristics and Prediction Model for Different Structure Greenhouse in Typical Weather in Wuhan

选用武汉农业气象试验站的单体薄膜大棚、连栋薄膜大棚、PVC温室为研究对象,分别研究了晴天、多云、阴天室内外气温的日变化特征,并构建了不同覆盖方式下温室内气温的预报模型。结果表明,PVC温室保温性能最好;单体薄膜大棚内气温升降速度快,升降幅度大。模型值与实测值的相对误差在2.2%~8.7%之间,均方根介于0.7~1.7℃。模型拟合精度较高,可为武汉市不同结构设施蔬菜的温室内温度调控提供科学依据。

One-span plastic greenhouse,multi-span plastic greenhouse and PVC greenhouse were selected to study the diurnal characteristics of interior and outdoor temperature in sunny, cloudy and dusky day at Wuhan national agro-meteorological stations, and air temperature prediction model for each kind of greenhouse was developed using stepwise regression method.The results indicated that the thermal insulation property of PVC greenhouse was the best. Variety range of air temperature inside one-span plastic greenhouse was higher with quicker ascend and descend of the speed. The corresponding relative error were all between 2.2% to 8.7%,and the root mean square error（RMSE） were all between 0.7 to 1.7 ℃. The models was quite precisely,which could provide scientific basis for control and predication of air temperature inside the greenhouse of facility vegetables in Wuhan city.