赤外放射遮へい材で被覆された温室の熱的性能

葉菜類の葉温および生長に及ぼす効果

抄録

The exclusion of infrared radiation contained in the solar radiation by greenhouse covering materials is expected to be an effective method to promote greenhouse culture during a high temperature period and cut down the cooling load of green-houses in the daytime. So, authors are investigating on the thermal characteristics in a greenhouse covered with a new selective absorber of infrared radiation which has been commercialized.
In the previous paper, the effect of the covering material on inside air and soil surface temperatures was mainly reported. In this report, the experimental results on the effect of the covering material on leaf temperature and growth of leaf vegetable are shown in comparison with a normal clear glasshouse.
The main results are as follows :
1) The effect on suppression of temperature rise in lettuce leaf under hydroponic was relatively large and increased with increasing solar radiation
2) Due to the suppression of an excessive rise in leaf temperature by using the covering material, the effect on the growth of leaf vegetables was also large except a low temperature period of December.