北方干寒地区日光温室太阳辐射预测模型构建

Forecasting Model of Shortwave Solar Radiation in Chinese Sunlight Greenhouse in the North Drought Cold Area

构建适用于北方干旱、寒冷地区的典型日光温室内外太阳辐射的动态预测模型。模型中考虑了天空云量对太阳辐射遮挡和室内作物生长对太阳辐射吸收、反射两个因素的影响,并利用内蒙古农牧业科技园区的日光温室对模型进行了验证。结果表明,模型能预测晴天、多云、阴天天气的日光温室外和室内到达土壤表面的太阳辐射的动态过程,预测值和实测值之间的相对误差不超过8%。

A dynamic forecasting model of shortwave solar radiation outside and inside of Chinese solar sunlight greenhouse in the north drought cold area is presented.Two aspects are included in the model.The influence of cloud cover on shortwave solar radiation is keeping out and influences of crop growth on shortwave solar radiation are reflection and absorption.To validate the correctness of the model,an experiment was carried out in the Chinese solar sunlight greenhouse in the Inner Mongolia agriculture science and technology park.The results show that the shortwave solar radiation forecasted agreed well with the measured data in the condition of sunny,cloudy and overcast sky of weather forecast,with the relative error no more than 8%.